Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.
Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for. Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy. Features and Benefits: Increased performance Direct fitment Signature Turner Blue finish
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Introducing our Turner Motorsport Crank Seal Guard – the essential shield for your BMW's engine integrity. Safeguarding the heart of your vehicle, this meticulously designed guard offers robust protection for the crank seal concealed behind the harmonic balancer.
Considered an indispensable maintenance component for your BMW, the Crank Seal Guard acts as a crucial defense against a potential and preventable catastrophe involving your accessory belt. Facing the reality of potential oil or coolant leaks in your engine, this guard becomes a reliable barrier, preventing these fluids from reaching the accessory belt. The consequence of a compromised belt includes walking, slipping, fraying, and rubber particles finding their way behind the harmonic balancer and into the crank seal – a scenario that can lead to severe engine failure.
Let's be honest, engine leaks are a common occurrence, and whether your engine is currently leaking or not, the Crank Seal Guard is a proactive measure against future threats. The wear and tear on the accessory belt due to oil and coolant exposure can result in slipping, tearing, or, worst-case scenario, belt snapping – posing a significant risk to your engine's well-being.
Prepare your car for the long haul and protect the vital components, It's not a matter of "if" but "when" your belt will become a problem, and our Crank Seal Guard is your proactive solution. Rigorously tested on N52/N54/N55 and S55 for 100% confirmed fitment, it stands as a reliable guardian for your engine's health. Invest in the protection your BMW deserves with the Turner Motorsport Crank Seal Guard.
Key benefits:
Protect crank seal from rogue accessory belts and their shredded debris Optimized to fit N52, N54, N55, and S55 engines Rigid design that fits within the space constraints between the engine block and harmonic balancer Zinc-coated fasteners for corrosion and oxidation resistance Design:
Modeled and designed from FARO laser scanning and Solidworks CAD Manufactured from 6061 billet aluminum Turner blue anodizing Installation:
It is a good idea to note how your belt is routed before starting the installation.
2 securing bolts for crank seal guard - Torque value of 20Nm
You will find either 6 or 8 E10 bolts are holding the harmonic balancer depending on the engine.
E10 (P#11237564511) N52: 6 bolts - Torque value of 25nm N54: 6 bolts - Torque value of 35nm N55: 8 bolts - Torque value of 35nm
E10 (P#11237575488) S55: 8 Bolts - Torque value of 35nm
This is a must-have for ALL BMWs, and simply installs in place of your existing drain plug. With every oil change you perform on your BMW, you'll be able to inspect for metal shavings and debris. Many times, if something is going wrong on your BMW's engine, the magnetic drain plug can give you an early warning. Our championship race team uses this info all the time (Ever find a piece of a valve spring in your oil? We have!) Be sure to get one now, and make the swap next oil change!
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Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for. Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy. Features and Benefits: Increased performance Direct fitment Signature Turner Blue finish
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High performance ignition kit for your N54/N55 featuring colder stepped spark plugs, Turner high performance ignition coils and grease to make sure you have no issues at your next maintenance interval! Included plugs are one Step colder for N55, Two step colder for N54.
Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for.
Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy.
Features and Benefits:
Increased performance New spark plugs and grease Direct fitment Signature Turner Blue ignition coils
When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however, this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed/recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
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Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.
Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.
Key Features:
Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or rod bearing service!
When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow.
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Increase drivetrain rigidity and put that power to the ground! This industry-leading encapsulated design reduces NVH and prevents heat transfer.
From the factory, all BMW models are equipped with soft rubber or fluid-filled engine mounts. While these mounts perform well at isolating drivetrain vibrations, they are prone to degradation and allow for significant drivetrain movement. This often results in a loose-feeling driveline, missed shifts, and a generally disconnected driving feel.
To address these issues, We have developed a performance alternative. Constructed from 6061 Billet Aluminum, these mounts are built to last. While most performance drivetrain mounts feature solid or polyurethane-bonded aluminum construction, the engineers at Turner designed a unique four-piece design that disburses NVH (noise, vibration, and harshness). This multi-piece design offers the added benefit of serviceability. Additionally, encapsulating the polyurethane and adding a TecaPeek isolator prevents heat transfer to the insert, increasing the lifespan and durability of the mount.
Features & Benefits:
High-strength 6061 billet aluminum construction 80A Polyurethane provides a considerable increase over stock rubber durometer, eliminating excess deflection and ensuring drivetrain stiffness. Instead of the typical polyurethane-bonded aluminum construction, this mount is encapsulated to reduce NVH (noise, vibration, and harshness). Finished in black hard-coat anodized for a clean, durable, and corrosion-resistant finish. TecaPeek isolator reduces heat transfer from the engine to the mount insert, increasing the lifespan of the mount. A simple bolt-on design makes for an easy install Replace your worn-out factory engine mounts and experience increased drivetrain rigidity, reduced deflection, and more precise shifting. Our Turner Performance Polyurethane Engine Mount Set is designed for maximum durability and strength while maintaining the perfect balance between stiffness and comfort—the perfect choice for your high-horsepower BMW!
Here at Turner Motorsport, we CAD design everything in house - our N55 engine covers are no exception. While designing our N55 carbon intake, we were unimpressed with the factory plastic beauty cover and wanted to give F30 335i owners an option that looked great with our intake and also exposed more of the engine's cold side. We did this to give your bay more of a performance aesthetic, taking cues from previous forced induction BMWs (I'm looking at you, N54). Our engine covers are hand-laid 2x2 twill carbon fiber, offered in matte or gloss finishes. The kit includes an OEM BMW roundel, to maintain an OE+ aesthetic in your F30's engine bay. We recommend pairing our engine covers with our Turner Motorsport carbon fiber N55 intakes to complete the performance look under your 335i's hood.
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Transform your N55-powered BMW with the Turner Motorsport B58 Ignition Coil Conversion Kit—the ultimate solution for ignition system reliability and performance. Designed to eliminate the notorious misfires and power loss caused by factory OE pencil-style ignition coils, this kit is a game-changer for stock and modified vehicles alike. Whether you're chasing more power or improved drivability, the B58 ignition coils deliver up to 2.3x more spark energy, unleashing the full potential of your engine.
Why upgrade? The answer is simple: B58 ignition coils outperform all other ignition upgrades on the market with unparalleled spark energy and reliability. Ideal for high-performance builds or daily drivers, this kit eliminates common ignition problems while supporting increased power demands from software tunes like MHD or BM3. Plus, with the included plug-and-play wiring harness and proprietary boots, installation is seamless—no cutting or splicing is required.
Features:
Up to 2.3x More Spark Energy: Maximizes overall performance, offering sufficient output for heavily modified engines. Plug-and-Play Installation: Includes custom brackets, wiring harnesses, and boots designed for factory mounting locations—no modifications needed. DME Compatibility: Compatible with factory engine management software for hassle-free integration. Rugged Durability: Bolt-on brackets are precision-machined from 6061-T6 aluminum with a sleek black anodized finish for a premium look and long-lasting performance. Proprietary Design: Boots feature a built-in 1k OHM resistor to prevent electrical contact failures commonly seen in other kits. Kit Contents:
(6) Turner Motorsport B Series Ignition Coils for N554/N55 (6) Turner Motorsport B58 Ignition Coil Conversion Wiring Adapters (3) Turner Motorsport B58 Ignition Coil Conversion Brackets Optional Kit Selections:
Spark Plugs: Bosch ZGR6STE2 (OEM) NGK 97506 (One Step Colder) Spark Plug Socket: Schwaben 14mm 12pt Magnetic Socket Schwaben 14mm 12pt Swivel Socket Turner Motorsport offers a comprehensive installation guide, including detailed removal instructions and high-resolution images.
Say goodbye to misfires and hello to unparalleled ignition performance with the Turner Motorsport B58 Ignition Coil Conversion Kit. Designed with precision and engineered for reliability, it’s the ultimate upgrade for your N55-powered BMW!
When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however, this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed/recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
Our catch can was also designed with the idea that the cans fill level can easily be checked with a top mounted dipstick and an optional use bottom drain hole. The drain system comes complete with a valve and hose to be mounted at a lower area of the vehicle so when you're doing an oil change you can drain the catch can.
Features:
6061-T6 billet machined body, anodized black for lasting protection and appearance
Strategically positioned 4 chamber baffle system maximizes oil / air separation
Knurled and black anodized oil dipstick makes inspecting oil volume of reservoir clean and simple
Sealed with a pre-installed viton O-Ring
Includes 2.5mm allen key to remove baffle plates for cleaning
Engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can
Closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation
When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow.
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
Our catch can was also designed with the idea that the cans fill level can easily be checked with a top mounted dipstick and an optional use bottom drain hole. The drain hole can be used with a valve and hose to be mounted at a lower area of the vehicle so when you're doing an oil change you can drain the catch can.
Features:
6061-T6 billet machined body, anodized black for lasting protection and appearance
Strategically positioned 4 chamber baffle system maximizes oil / air separation
Knurled and black anodized oil dipstick makes inspecting oil volume of reservoir clean and simple
Sealed with a pre-installed viton O-Ring
Includes 2.5mm allen key to remove baffle plates for cleaning
Engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can
Closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation
Optional use drain hole (valve and hose sold separately, watch for our model specific drain kits!)
Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.
Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.
Key Features:
Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or main bearing service!
The Precision Raceworks Ethanol 360 fuel line fittings are designed to work in almost any application where you have 5/16" or 7.89mm quick-connect fittings and need to add a flex fuel sensor. These fittings work with almost all ethanol sensors without the need to cut and splice or replace entire line sets. This is a perfect way to add an ethanol sensor to your vehicle while maintaining existing fuel lines.
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Replacement Fuel Filter Element - 6 Micron | Precision Raceworks is designed for BMW and high-performance fuel systems, ensuring optimal fuel flow and superior filtration. This high-efficiency 6-micron filter element effectively captures contaminants, preventing debris from reaching fuel injectors and maintaining peak engine performance.
Regular maintenance of your fuel filter is essential for maximizing fuel system efficiency. Whether for racing or daily driving, this replacement element keeps your fuel system running at its best.
6-micron filtration – Removes fine particles and contaminants to protect engine components
High-performance compatibility – Designed for use with Precision Raceworks inline fuel filters
Durable construction – Engineered for long-lasting reliability in high-demand applications
Easy replacement – Simple installation for routine maintenance
Ideal for both street and track use – Ensures clean fuel supply for all driving conditions
Fuel Filter Replacement Guidelines:
Racing applications: Inspect at least twice per season and replace as needed
Daily driving: Inspect at least once a year or every 6,000 miles, replacing as necessary
Ensure your BMW fuel system stays clean and efficient with the Replacement Fuel Filter Element - 6 Micron | Precision Raceworks, the ultimate choice for maintaining performance and reliability.
Port Injection Fuel Line For Top Mount Fuel Rail - N54 N55 is designed for seamless compatibility with most aftermarket intake manifolds featuring top mount port injection. It works with leading brands such as Black Market Parts, BKC, BMS, Sharp Custom, Doc Race, and more, ensuring a high-performance fuel delivery solution for BMW N54 and N55 engines.
Constructed with premium 6061 aluminum and anodized for 100% E85 compliance, this fuel line is engineered for durability and optimal fuel flow. The female quick connectors feature an air hose-style quick connect with dual seals (primary and secondary) to eliminate any risk of fuel leaks. Precision Raceworks utilizes Smooth Bore PTFE hose, a trusted component in high-end E85 applications worldwide.
This plug-and-play solution is fully compatible with both factory and aftermarket fuel lines, providing an easy, reliable way to supply fuel to the port injection system of your upgraded intake manifold.
Seamless fit – Compatible with most aftermarket top mount port injection manifolds
Durable construction – Machined from 6061 aluminum and anodized for E85 compatibility
Leak-proof design – Dual-seal quick connectors for maximum fuel safety
The Precision Raceworks Ethanol 360 fuel line fittings are designed to work in almost any application where you have 3/8" (9.49mm) quick-connect fittings and need to add a flex fuel sensor. These fittings work with almost all ethanol sensors without the need to cut and splice or replace entire line sets. This is a perfect way to add an ethanol sensor to your vehicle while maintaining existing fuel lines.
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Precision Raceworks' BMW N54 / N55 replacement spark plug wires are the same plug wires that are included in their High-Performance Ignition Kits 601-0021 & 601-0021-1
MMR's Low Temp Oil Thermostat is one of the easiest ways to increase your oil cooling capability. Rated to maintain the oil temps at about 194F (90c) to 230F (110c). Machined from aircraft grade T-6061 aluminum and anodized in MMR's trademark finish for durability. Installation is easy as it fits right into the OEM oil thermostat housing on the N54 and N55. Highly recommended for cars used on the track or with a higher power and torque output than stock.
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MMX's Performance billet oil filler cap machined from billet T-6061 aluminum has been designed to instantly give your engine bay an subtle aesthetic upgrade. This cap comes in a Black finish. *Note: After exposure to excessive heat over prolonged periods, overall finish fading can occur. Reusing of original seal is required.
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Adjust your fuel pressure as needed. Thanks to the 1:1 boost reference, fuel pressure will increase as boost pressure increases, ensuring fuel delivery remains optimal under all conditions.
The Precision Raceworks N55/S55 Upgraded DI Injectors are designed for customers looking to push the limits without port injection (or in addition to port injection). Our high flow injectors were developed in a partnership with NHP, taking advantage of resources offered by both companies to produce the highest quality and highest flowing direct injector upgrade ever for the N55 engine. These high flow injectors flow 85% over stock! Each injector is tested and calibrated using state of the art high pressure flow calibration equipment and then matched to a set of 6. Installation of these is a snap and is as simple as replacing your injectors, a little coding, and then checking a checkbox!
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The centerpiece of this MMX kit is the UK-made CNC-machined one-piece crank hub, created from billet EN36 steel that's heat-treated with a 0.75mm case hardening, making it incredibly strong and durable. Included are four aerospace precision-machined dowels that mechanically lock the hub to the end of the crank itself, plus a brand new OE bolt. Installation of these dowels is certainly not a DIY job. But, to make the job easier for the professionals, ensuring that the required crank modifications are made safely and accurately, the MMX kit also includes a full installation jig that includes a bolt-on drilling guide, a location bolt for this guide, plus an HSS rolled high-speed drill bit. Together, the single-piece design combined with the four-pin location ensures that there is simply no way that the friction plates can ever slip. With the new OE crank bolt tightened appropriately, this delivers a transformational improvement in reliability and peace of mind versus the OE version. Also included is the MMR Crank Bolt Capture Plate. This adds one additional layer of defense, preventing the crank bolt from being able to back out and loosen over time, ensuring everything is tightly held together as intended.
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Higher mileage engines and especially ones with direct-injection are prone to carbon build-up on the backs of the inlet valves. However, when deposits are removed by the catch can's filter and separation process, the intake air receives less oil and more oxygen, resulting in a cleaner, more reliable, and better performing engine. MMR's Performance catch can kit For N55 powered M235i's and M2's was designed to help owners ensure their engines are running at optimum performance This is done by removing unwanted oil from the PCV system before it can get back into the intake. The T-6061 billet filter housing, anodized in the trademark MMR finish, comes with a billet bracket for easy installation, including all hoses and fittings necessary for installation. The catch can kit has been designed to offer added performance, allow easy installation and enhanced aesthetics too. Checking the level for any oil removed from the intake system is easy thanks to the integral dipstick. A cap-head bolt mounted in the lower section of the catch can allows for easy draining, or if you prefer, the lower section itself can be easily unscrewed and removed. Features: Effectively prevents oil build-up in the intake system and intercooler walls Maintains optimum engine performance Easy installation with all supplied hardware included Race fittings and PTFE-lined hoses throughout Easy oil level checking and draining
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Rid your BMW's N55 of misfires, sluggish throttle response, rough idle, and power loss with Precision Raceworks' High-Performance Ignition Kit! Precision Raceworks' ignition kit is designed to fit any vehicle with an N55 engine and offers the highest output of any kit on the market! Featuring 100% Plug-&-Play connections, low resistance 50ohm/ft proprietary plug wires, and design technology from Marine and Aerospace applications, these coils are guaranteed to output consistent high voltage and current for optimal ignition system performance and reliability. Every component in this kit meets or exceeds OEM quality and features premium seals for dust and water resistance. While coils do not directly increase horsepower, stock BMW coils can wear out quickly, resulting in underperforming voltage and current output. This often leads to weaker spark intensity and reduced power output. Due to the increased voltage and current output, many customers have seen as much as 20+ whp/wtq gained by switching to Precision Raceworks coils over all other coils on the market! By upgrading to Precision's Performance Ignition Kit, spark quality can be restored, and lost power regained often with the additional power beyond what other coils provide. No software tune is required for installation or operation, but if desired, coil output can be increased to 118mJ from most software tuning companies!
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Precision Raceworks' BMW Secondary Pump Activation Harness is the top choice among pump manufacturers and tuners for controlling auxiliary fuel pumps. This kit is considered the most complete and highest quality kit on the market and is sold private label to many BMW pump manufacturers. That is why this harness is the #1 method of secondary pump control on the market around the globe.
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If you are looking for peace of mind over the prone to cracking OEM plastic housing cap, this oil filter housing cap by MMX may be exactly what you are looking for. Composed of billet aluminum, this cap is light, durable, and dresses up your engine bay! Comes finished with a polished anodized dark anthracite coating. Installation is simple as it can be replaced while completing an oil change. *Note: After exposure to excessive heat over prolonged periods, overall finish fading can occur.
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Both the N55 and S55 engines are plagued by the same issue when chasing high horsepower numbers... the dreaded crankhub failure. Fortunately MMR Performance has released an upgraded version of their already stout single-piece crankhub, but this time offering a 4-pin dowelled location that locks onto the front of the crankshaft. This configuration eliminates the multi-piece crankhub with friction discs in favor of a more robust single piece crankhub. Recommended for high-powered cars over 700 Horsepower
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Anyone with a modified N55/S55 knows the risks involved with the OEM Crank Hub. When the engine simply can't handle the stresses its put under or the design is such that it simply does not support extreme conditions, issues can arise. Under certain conditions, the N55/S55 crank hub likes to spin, without warning and even when the engine is in perfect health. MMR has produced a EN36 machined billet one-piece crank hub heat treated with a 0.75mm case hardening which makes it extremely durable. Due to the one-piece design, it ensures that the friction plates cannot slip. This offers a huge jump in reliability when paired with a new properly torques crank bolt. Installation is requires no drilling or modification to the OEM crankshaft ensuring a perfect fit! Included in this kit is MMR's T-6061 machined billet aluminum capture plate anodized in their trademark finish. The MMR Performance capture plate secures the head of the OE crank bolt and prevents it from turning or being able to loosen. *Installation recommended by a professional shop or technician.
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For enthusiasts seeking to regulate fuel pressure at the engine without the complexities of manual adjustments or the need for a 1:1 boost reference, a preset fuel pressure regulator offers an ideal solution. These compact regulators are designed for straightforward installation and consistent performance.
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Replacement Fuel Filter Element - 10 Micron | Precision Raceworks offers excellent filtration for BMW and high-performance fuel systems, ensuring that larger particles and contaminants are filtered out to maintain optimal engine function. This 10-micron replacement filter element is designed to work seamlessly with Precision Raceworks inline fuel filters, delivering superior protection to your fuel system components, including injectors and fuel pumps.
Whether you're racing on the track or using your vehicle for daily driving, this replacement fuel filter element keeps your fuel system performing at its best by providing reliable filtration and smooth fuel delivery.
10-micron filtration – Effectively captures larger particles and contaminants to protect fuel system components
Durable construction – Crafted with high-quality materials for long-lasting use under various conditions
Seamless integration – Direct replacement for Precision Raceworks inline fuel filters
Versatile use – Perfect for daily driving, street, and high-performance applications
Easy to replace – Simple maintenance to keep your fuel system clean and efficient
Fuel Filter Replacement Guidelines:
Racing applications: Inspect at least twice per season and replace as necessary
Daily driving: Inspect annually or every 6,000 miles, and replace as needed
Ensure your BMW’s fuel system stays in top shape with the Replacement Fuel Filter Element - 10 Micron | Precision Raceworks, designed to deliver consistent fuel flow and protect your high-performance engine.
The Precision Raceworks AN6 Male Flare/ORB to 5/16" (7.89mm) Female Quick Connect is a premium component designed for fluid or fuel systems. The AN6 male flare/ORB fitting ensures a secure connection, while the 5/16" (7.89mm) female quick-connect fitting allows for fast, tool-free disconnection and reconnection. This setup guarantees a reliable, leak-proof seal, ideal for high-performance systems. Would you like assistance sourcing this fitting or other Precision Raceworks components?
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Rid your BMW's N55 of misfires, sluggish throttle response, rough idle, and power loss with Precision Raceworks' High-Performance Ignition Kit! Precision Raceworks' ignition kit is designed to fit any vehicle with an N55 engine and offers the highest output of any kit on the market! Featuring 100% Plug-&-Play connections, low resistance 50ohm/ft proprietary plug wires, and design technology from Marine and Aerospace applications, these coils are guaranteed to output consistent high voltage and current for optimal ignition system performance and reliability. Every component in this kit meets or exceeds OEM quality and features premium seals for dust and water resistance. While coils do not directly increase horsepower, stock BMW coils can wear out quickly, resulting in underperforming voltage and current output. This often leads to weaker spark intensity and reduced power output. Due to the increased voltage and current output, many customers have seen as much as 20+ whp/wtq gained by switching to Precision Raceworks coils over all other coils on the market! By upgrading to Precision's Performance Ignition Kit, spark quality can be restored, and lost power regained often with the additional power beyond what other coils provide. No software tune is required for installation or operation, but if desired, coil output can be increased to 118mJ from most software tuning companies!
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Ideal for enthusiasts looking to optimize their vehicle’s fuel system, this ethanol sensor harness delivers precision and reliability for high-performance applications.
Rid your BMW's N55 of misfires, sluggish throttle response, rough idle, and power loss with Precision Raceworks' High-Performance Ignition Kit! Precision Raceworks' ignition kit is designed to fit any vehicle with an N55 engine and offers the highest output of any kit on the market! Featuring 100% Plug-&-Play connections, low resistance 50ohm/ft proprietary plug wires, and design technology from Marine and Aerospace applications, these coils are guaranteed to output consistent high voltage and current for optimal ignition system performance and reliability. Every component in this kit meets or exceeds OEM quality and features premium seals for dust and water resistance. While coils do not directly increase horsepower, stock BMW coils can wear out quickly, resulting in underperforming voltage and current output. This often leads to weaker spark intensity and reduced power output. Due to the increased voltage and current output, many customers have seen as much as 20+ whp/wtq gained by switching to Precision Raceworks coils over all other coils on the market! By upgrading to Precision's Performance Ignition Kit, spark quality can be restored, and lost power regained often with the additional power beyond what other coils provide. No software tune is required for installation or operation, but if desired, coil output can be increased to 118mJ from most software tuning companies!
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Introducing the N55 Gauntlet High-Pressure Fuel Pump, the latest innovation from Precision Raceworks, built to outperform and provide unmatched value for N55 enthusiasts. Engineered to flow 70% more fuel than stock and 4% more than the original Big Bore, the Gauntlet sets a new standard in high-performance fuel delivery. Whether you’re looking to maximize power or prepare for future upgrades, the Gauntlet HPFP is designed to meet your needs with exceptional performance and reliability. The Gauntlet HPFP supports up to 240 bar fuel rail pressure, providing consistent fuel delivery for even the most demanding applications. Whether you’re running pump gas, E85, or any blend in between, the Gauntlet is proven through over 60,000 miles of on-road testing and dynamic testing on HPFP test benches.
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n Ethanol Sensor Breakout Harness provides a clean wiring solution by splitting the signal from your ethanol content sensor between two analyzers, such as an ECU/controller and a gauge or Bluetooth display, without modifying your existing harness.his setup enables real-time ethanol level monitoring and facilitates comprehensive DME/ECU adjustments for enhanced automotive performance.citeturn0search0
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For enthusiasts seeking to regulate fuel pressure at the engine without the complexities of manual adjustments or the need for a 1:1 boost reference, a preset fuel pressure regulator offers an ideal solution. These compact regulators are designed for straightforward installation and consistent performance.
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If you plan on upgrading your turbos or increasing power in some other way, you will also want to consider upgrading your fueling capability as well! Using stock BMW injectors, you will likely top out at around 550rwhp on 93 Octane with water/methanol injection (or less if running an ethanol blend). At the end of the day, the stock injectors just are not enough. Introducing Black Market Parts (by Precision Raceworks) Multi-Port Injection Kit with flex-fuel compatibility! This kit allows you to safely and sufficiently support greater power levels with supplemental fueling without straining your stock fuel system. This kit integrates seamlessly into your car as if it were installed at the factory; you can’t even see the kit once the car is assembled! This kit includes everything needed to add multi-port injection and is 100% e85 compliant. Precision Raceworks includes new Genuine Bosch injectors which are flow matched both static and dynamic by an outside lab to industry-leading requirements. A Detailed certificate of conformance and genuine Bosch product certificate is included with each kit, giving you all flow data needed for optimal tuning. Don’t be tricked into thinking all port injection kits are equal, the BMP kit is the industry leader. This kit features 950cc* injectors standard (this flow rate is based on industry-standard injector flow test pressure of 43.5psi). This means Precision's BMP Port Injection Kit is capable of supporting builds from 500whp up to 1,000+whp and anywhere in between! Simply pick up this kit and pair it with your favorite injector controller and you are ready to go!
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