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The ZF S5D 320Z 5-speed transmission is known for its robust design, exceptional durability, and impressive power-handling capability. Unfortunately, as these transmissions age, shifter-related issues have become increasingly common. Problems such as difficulty selecting gears, a sticky shifter, or a decline in shift quality are often the result of worn detent springs, pins, and bushings. These components are essential for precise gear engagement and proper shifter centering, making their replacement a critical step in maintaining optimal performance.
Replacing detents requires specialized tools known as "drifts," which are notoriously hard to find. Fortunately, we've developed a complete Detent Tool Kit, featuring five precision-engineered drifts designed for exact fitment in the ZF transmission's detent bores. This toolset makes detent replacement straightforward and minimizes the risk of damage to internal transmission components.
Features
Complete Tool Kit: Includes five precision-machined drifts specifically designed for the ZF 5-speed transmission’s detent bores and caps. Hassle-Free Detent Replacement: Simplifies the process of removing and installing detents with professional-grade precision. Protects Your Investment: Reduces the risk of damaging internal transmission components during service. Durable Construction: Made from heavy-duty 1045 steel for exceptional strength and long-lasting reliability.
The ZF 320z S5D is a common swap choice among BMW enthusiasts due to its reliable and robust nature. Unfortunately, it does have a weakness. The detent pins and springs that live inside of the transmission are known to wear down over time, often causing the shift lever to lean towards the 5th gear position when in neutral.
This full-service kit consists of everything you need to replace the failing detents in your ZF transmission. The kit contains only Genuine ZF components, all of which are sure to provide you with smooth shifting and operation for years to come.
This kit includes the following items:
3 Shift Pin Kits - 23117525048
2 Slide Bushings - 23117533395
2 Gearbox sealing lids - 23311224825
1 Shifter detent pin - 23311224849
1 Shifter detent pin - 23317502165
2 Lock Rings - 23317531374
3 Spring Retention Plates - 23317637524
5 Detent Drift/Punch Tools - 054834LA01AKT
Remedying the ZF's detent issue is a must for any enthusiast planning to get the most out of their transmission. Proper centering is essential for quick and smooth shifting, both being desirable features in any application. This kit is easy to install with several DIY guides existing online. A set of "drift" tools are included for proper installation.
The ECS Tuning Center Support Bearing Brace is engineered to improve drivetrain performance and longevity. The factory center support bearing features internal an internal rubber bushing to reduce NVH (noise, vibration, and harshness) transmission to the cabin. Unfortunately, this material choice falls short when it comes to performance applications. Under extreme load conditions, this bushing is prone to flexing, resulting in driveshaft misalignment. To address the shortcomings of the factory rubber center support carrier design, ECS engineers developed a set of precision-fit, split polyurethane bushings that secure tightly around the existing driveshaft bearing. Constructed from 30A durometer polyurethane, this material eliminates bushing deflection while maintaining minimal noise, vibration, and harshness (NVH). By eliminating deflection, this innovative solution not only improves durability but also ensures a significantly longer service life than the OEM center support bearing—making it an excellent upgrade for aging BMW chassis.
The polyurethane bushings are surrounded by a robust 6061-T6 billet aluminum bracket designed with strength and reliability in-mind. This bracket features a split design for hassle-free installation, eliminating the need to remove the driveshaft assembly entirely. To install the ECS Center Support Carrier, simply cut around your existing bearing, remove the factory brace, and clamp on your new bushings and bracket. This user-friendly approach saves time and simplifies maintenance or upgrades. Two stainless steel socket head screws are used to fasten the two-piece bracket, offering corrosion resistance and secure clamping under high torque and stress. This combination of materials and design ensures dependable performance and long-lasting durability, even in demanding applications.
Features & Benefits:
Performance-Designed Bushing Upgrade: 30A durometer polyurethane is used to eliminate bushing deflection while maintaining a smooth, quiet ride. Improved Longevity: Polyurethane construction offers a longer lifespan than factory rubber, ideal for enthusiasts looking to eliminate future CSB-related problems. Billet Aluminum Bracket: The upgraded bushings are encased in a 6061-T6 billet aluminum bracket for enhanced durability and improved performance. Easy Installation: Both the bushings and the bracket feature a two-piece split design, allowing for seamless installation without driveshaft removal. Reduce Deflection, Increase Rigidity: Designed with performance in mind, this upgrade eliminates excessive driveshaft movement for improved alignment and efficiency. Kit Includes:
ECS Driveshaft Center Support Bushings ECS Driveshaft Center Support Carrier (2) Stainless Steel Hex Head Screws (2) Flange Nuts (26117574872) Medium Strength Threadlocker (0.5ml) Installation Instructions:
ECS has provided a detailed, start-to-finish installation guide to aid in the process of installing your new Driveshaft Center Support Carrier.
From the factory, the E46 M3 featured a dual-mass flywheel and self-adjusting clutch kit. While this provided an easy, comfortable driving experience, it lacks the durability and performance features of an upgraded clutch and flywheel kit. ECS Tuning's all-new S54 performance clutch kit is designed to address these issues. Featuring a full-face clutch disc and heavy-duty pressure plate, this kit offers increased power-holding capability, exceptional pedal feel, and superior durability.
The factory dual-mass flywheel weighs 24.2 lbs. This heavyweight component favors dampened vibrations and smooth gear changes—not performance. The 16.5 lb. E34 M5 flywheel designed by ECS omits the bulky dual-mass design for a single-mass, chromoly steel flywheel. For the performance-minded enthusiast, this translates to quicker RPM changes, easier "heel-toe" downshifts, and improved acceleration.
Engineered in-house with the enthusiast in mind, this is the perfect option for those wanting a lightweight flywheel and performance clutch, without the heavy pedal feel commonly associated with aggressive clutch kits. The ECS S54 performance clutch and lightweight flywheel are designed to accommodate all conditions: from Sunday drives through the country to the abuse of the track. No matter your driving style or ability, this is the flywheel and clutch kit for you.
PART DESIGN
ECS S54 Performance Clutch Kit:
Compatible with any performance flywheel that is designed to accept an E34 M5 architecture clutch Sprung-hub clutch disc Includes ECS performance pressure plate, performance clutch disc, throwout bearing, pilot bearing, alignment tool, and all flywheel and pressure plate hardware ECS Single-Mass Lightweight Flywheel:
Eliminates the factory dual-mass flywheel for: Improved throttle response Improved acceleration Lower replacement cost Hardened 4140 Chromoly Steel for excellent engagement feel and wear resistance Zinc-plated for added corrosion resistance Weighs in at just 16.5 lbs! SFI tested and certified to ensure safe operation under all conditions Why is SFI testing and certification important?
The SFI Foundation, Inc. (SFI) is a non-profit organization established to issue and administer standards for the quality assurance of specialty performance and racing equipment. SFI certification indicates a flywheel has been certified using industry-standard SFI Spec 1.1 standards by an independent testing body to ensure the quality of both design and materials for flywheels utilized in competitive motorsports.
Having successfully passed SFI certification, this flywheel has an individual SFI serial number found in a laser etching, and on an affixed sticker. This certification means the ECS-engineered flywheel is safe and reliable during the rigors of competitive racing; it's also safe and reliable for years and years of street use.
PRODUCT DEVELOPMENT
This Performance Clutch Kit & Lightweight Flywheel was designed, engineered, tested, and quality inspected by the ECS Research and Development team. ECS Tuning strives for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing an in-house 3D printer, and rigorous long-term product testing.
ECS Performance Clutch and Flywheel Kit – Built for Precision and Power
Step up your BMW’s driving experience with the ECS Performance Clutch and Flywheel Kit, engineered for drivers who demand improved throttle response, stronger engagement, and seamless power delivery. Featuring a modified E34 M5 clutch setup paired with an expertly crafted single-mass flywheel, this kit is designed to enhance both the feel and performance of M5x and S5x engines with 5-speed transmissions.
The single-mass flywheel replaces the bulky, factory dual-mass version, significantly reducing rotational weight for quicker throttle response and sharper acceleration. This kit retains the robustness of the M5 clutch but ups the ante with a reinforced pressure plate and clutch disc, giving you not only increased power handling but also a highly responsive pedal feel for precision control.
Perfect for both clutch replacements and power upgrades, the ECS Performance Clutch and Flywheel Kit transforms your driving experience without sacrificing pedal feel or adding unwanted stiffness. Say goodbye to spongy or overly rigid aftermarket options—this setup strikes the balance that enthusiasts crave, giving you both reliability and satisfaction behind the wheel.
Kit Contents:
Single Mass Flywheel with E34 M5 Clutch Geometry Upgraded Clutch Disc and Pressure Plate Throw-out Bearing and Pilot Bearing Clutch Alignment Tool Flywheel and Pressure Plate Bolts Clutch Highlights:
Torque Capacity: 375 ft-lbs at the crank 240mm Performance Clutch Disc: Organic friction material with copper for heat dissipation and durability OE-Like Backing Plate: Provides smooth engagement and reduced driveline chatter Reinforced Pressure Plate: Holds 1,729 lbs of pressure for a firm, predictable pedal Flywheel Highlights:
Single-Mass Construction: Replaces the heavy factory dual-mass flywheel 4140 Chromoly Steel: Lightweight yet robust (16.5 lbs vs. factory 25.3 lbs) Enhanced Response and Acceleration SFI Certified Developed with Precision: Engineered and quality-tested by ECS Tuning in our Ohio facility, this kit reflects the best in performance engineering. Utilizing advanced tools like FARO laser scanning and 3D CAD modeling, we ensure precision fitment, durability, and consistent results for every driver.
Polyurethane Transmission Mount Set - Street Performance
Your transmission mounts are the backbone of your drivetrain. Stock rubber mounts often degrade quickly, leading to excess movement, mis-shifts, and, in some cases, even chassis damage. ECS Tuning’s Street Performance Polyurethane Transmission Mount Set offers an upgraded solution built for street and track performance alike.
Constructed from high-quality polyurethane and 304 stainless steel, these mounts are crafted to withstand the demands of high-torque and forced-induction setups, minimizing deflection and giving you more direct power delivery. With a 70A durometer rating, these mounts offer the best of both worlds—stiff enough to handle aggressive driving but still comfortable for daily commutes. For track-focused builds, we also offer a stiffer 80A version (sold separately).
Key Features:
Improved Stability: Reduced transmission movement for fewer mis-shifts and over-revs Polyurethane Construction: Stronger than rubber, with excellent oil and water resistance Engaging Driving Experience: A more connected feel without excessive vibration Dual Options: Choose Street (70A) or Race (80A) to match your driving style Durable Design: Mechanical interlock feature for high-stress applications Pair your new clutch and flywheel kit with these premium mounts for an unparalleled driving experience. Plus, our DIY guide makes installation easy—ECS Tuning has you covered from start to finish!
Looking to upgrade your drivetrain for durability and performance? The Turner Motorsport Billet Differential Cover Kit, paired with ECS Tuning's Polyurethane Transmission and Differential Mounts, offers the ultimate solution to eliminate drivetrain flex and enhance your BMW M3’s strength. Perfect for street or track use, this kit ensures top-tier performance for your E46 M3.
Turner Motorsport Billet Differential Cover Kit with ECS Polyurethane Differential Bushings
Engineered for strength and designed to handle extreme conditions, the Turner Billet Differential Cover is built from a single piece of 6061 billet aluminum and finished with a hard-coat anodizing for durability and corrosion resistance. It’s reinforced with mounting ears that prevent common failures seen with OEM diff covers, ensuring stability even during aggressive driving.
This high-performance cover features internal cooling fins that help dissipate heat, keeping the fluid cool and prolonging the life of your differential. It also maintains continuous lubrication of the ring gear, preventing fatigue and heat buildup. The cover is compatible with stock and aftermarket bushings, and comes with upgraded -6AN drain and fill plugs for easy maintenance or for expanding to an external oil cooler. A 1/8 NPT fitting is also included, making it easy to install a temp sensor and keep an eye on fluid temperatures.
Key Features:
Reinforced mounting ears: No more broken diff cover ears. Cooling optimized: External and internal fins reduce heat buildup. Increased capacity: Holds more fluid for better performance. Oil cooler ready: -6AN ports for external cooler installation. 1/8 NPT provision: Easily add a temp sensor. Sight glass: Check fluid level without removing plugs. Compatibility:
Fits E46 M3 with large case 210/215mm differentials. Designed for stock, polyurethane, or solid differential bushings. Accommodates OEM speed sensor and wire mounts. ECS Tuning Polyurethane Transmission Mount Set
Tired of soft factory transmission mounts causing mis-shifts or excessive movement? ECS Tuning’s Polyurethane Transmission Mount Set is the solution. With a durable 70A durometer rating, these mounts offer the perfect balance between everyday comfort and track-ready stiffness. For more track-focused drivers, we also offer an 80A durometer option.
These mounts feature a mechanical interlock design, ensuring longevity even in high-torque applications. Resistant to oil, water, and heat, polyurethane lasts longer than rubber and significantly reduces drivetrain deflection, improving power delivery and driving engagement.
Key Features:
Reduces transmission movement: Minimizes mis-shifts and over-revs. Polyurethane construction: Durable, with superior wear resistance. Two options: Choose between 70A for daily driving and 80A for track use. Engaging driving experience: More connected feel between driver and drivetrain. Upgrade your E46 M3 with this robust kit, and bulletproof your drivetrain today! Perfect for enthusiasts pushing their cars to the limit on the street or track.
Upgrade the whole driving experience of your car with a single mass clutch and flywheel conversation paired with new upgraded engine and transmission mounts. These street durometer mounts are 70 and 75 durometer for an improved but not too harsh driving experience. This clutch and flywheel upgrade features a slightly heavier pedal feel with smooth engagement, paired with your upgraded drivetrain mounts you are sure to have confidence in how sturdy your car drives!
Our performance clutch and flywheel kit utilizes an upgraded ECS E34 M5 clutch kit with our in-house engineered flywheel to fit all M5x and S5x motors with a 5-speed transmission. By eliminating the dual-mass flywheel and replacing it with a single-mass we are able to eliminate the slack and extra weight of the flywheel for a quicker throttle response and acceleration. Our upgraded clutch kit utilizes all the best features of the original M5 clutch with an upgraded pressure plate and clutch disc, with the new clutch you have a better, more engaged clutch pedal feel, engagement, and longevity.
Whether you're replacing a worn-out clutch or upgrading for increased power handling, this E34 M5 clutch and flywheel kit offers a reliable solution for enhanced pedal feel, power capacity, and overall driving satisfaction.
Paired with a modified geometry flywheel, the E34 M5 style clutch is ideally suited for most E36, E46, and others using the same powertrain. It checks all the boxes for essential clutch replacement features. While some aftermarket options may address slipping issues and worn-out clutches, they often sacrifice pedal feel, providing little to no resistance. A soft clutch not only kills the driving experience of your BMW but also reduces confidence when pushing the car to its limits.
On the contrary, you might be in the market for an upgraded clutch to handle your modified engine/forced induction builds. You go from an OE or aftermarket clutch option that has a lackluster and soft pedal feel to the complete opposite side of the spectrum, a very stiff clutch that grabs like an on-and-off switch making the clutch a pain almost undrivable on the street resulting in your favorite car turning into your least favorite car to drive.
The E34 M5 clutch and flywheel kit balances performance with practicality, ensuring a satisfying driving experience whether you're maintaining your BMW or preparing it for increased power demands.
Kit Contents:
Single Mass Flywheel - E34 M5 Clutch Geometry Performance Clutch Disc and Pressure plate Throw-out Bearing Pilot Bearing Clutch Alignment Tool Flywheel Bolts - Qty 8 Pressure Plate Botls - Qty 6 Clutch features:
Torque Capacity (Crankshaft): 375 Ft / Lbs Clutch Disc: 240mm Full face, performance organic friction material with integrated copper for enhanced heat dissipation and a long component life OE-like friction backing plate design for smooth engagement with dual-stage damping springs to reduce gear noise and driveline chatter, and for smooth engagement Pressure Plate Increased clamp force over OEM, rated at 1,729lbs of pressure Flywheel features:
Eliminates factory dual mass Improved throttle response Improved acceleration Hardened 4140 Chromoly Steel Designed for use with any E34 M5 pressure plate and clutch for OE-type clutch feel Weighs in at just 16.5lbs vs Factory Dual Mass - 25.3 lbs SFI certified Polyurethane Transmission Mount Set - Street
70A durometer rating - slightly stiffer than stock for improved shifting quality and driveline performance. Constructed of 304 stainless steel with bonded and constrained polyurethane. The transmission mounts in your car play a critical role in your suspension. With this in mind, the stock mounts have been known to experience failures causing over-revving, mis-shifts, and in extreme cases, even chassis damage. Combat this issue with upgraded polyurethane transmission mounts from ECS Tuning. Designed with the street and track in mind, we've got you covered no matter your driving style. Fears of torn mounts are a thing of the past; a mechanical interlock feature makes these mounts ideal even for high-torque, forced-induction applications. Engine Mounts - 75A Durometer
Keep your engine securely mounted with our solid, non-fluid-filled mounts. Our ECS 75A Durometer engine mounts are custom-made in-house by our leading R&D department. These mounts result from countless hours of research and testing to establish the best possible bushing design to minimize engine vibration and driveline deflection while maximizing strength. ECS Tuning's primary goal was to achieve an economical, durable & compliant ride while maximizing performance. After putting down thousands of real-world test miles on multiple vehicles, we've done just that. With exposure to heat and elements, your motor mounts will break down with increasing age. A secure mount* is vital to reduce drivetrain vibration and transfer as much horsepower to the wheels as possible. These mounts are an upgrade for non-M E36/E46 owners seeking a stiffer mount without sacrificing comfort and ride quality.
The URO Front Inner Left/Right BMW Wheel Hub Dust Cap is a high-quality replacement designed to protect your BMW’s wheel bearings from dirt, moisture, and debris. This direct-fit OE replacement ensures a secure and proper seal, preventing premature wear and extending the lifespan of the wheel hub assembly. Manufactured from durable, heat-resistant materials, this dust cap withstands high temperatures and road vibrations for long-term reliability. Designed for easy installation, it restores proper bearing protection and helps maintain optimal wheel performance.
Ensure your BMW’s wheel bearings stay properly protected with the URO Front Inner Left/Right BMW Wheel Hub Dust Cap for enhanced performance and longevity.