BMW Drivetrain Parts for BMW Z Series E85/6 (2003-2008)

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Building your perfect BMW is more than just adding horsepower and stiff suspension. Your drivetrain needs attention in order to deliver power effectively. Most BMWs feature comfortable clutch discs, heavy flywheels, long shifter throws, and open differentials. The drivetrain transmits power to the wheels, but can also be a source of power loss when it is designed for comfort rather than performance. Everything on this page will help you improve your power delivery and driving experience by providing custom Limited Slip Differentials, Short Shift Conversions, Performance Clutch Discs, Lightweight Flywheels, and anything else your BMW needs to be the perfect driving experience.

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E46 M3, Z4M Performance Polyurethane Differential Bushing Set ...
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ECS - Corporate Logo
T#:378193
Part#: 002447ECS03KT
In Stock
Sale - Save 35% $ 189.99
$ 123.49 USD
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$ 123.49 USD
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Worn rubber differential mounts will lead to the differential twisting and shifting around in the rear subframe. Not only will this be noisy but it's bad for driver confidence and bad for the chassis as well. Even on fresh rubber bushings the differential has deflection and twist, especially if the car has been modified for more torque. Since the differential is centrally mounted in the rear subframe, with all suspension mounts interconnected, a differential with too much deflection will affect handling and could even damage the rear subframe.

These 88A urethane E46 M3 diff mounts are much stiffer than stock but still not as solid as our Turner aluminum/Delrin bushings. This set will resist twisting much better than the stock rubber mounts. Included is the front diff mount and two rear mounts in the cover.

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BMW Teflon Shifter Bushing Kit
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ECS - Corporate Logo
T#:369435
Part#: 2511-002
In Stock
Sale - Save 40% $ 70.99
$ 42.59 USD
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$ 42.59 USD
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Enhance Your BMW's Performance with the BMW Teflon Shifter Bushing Kit

  • Improves shifting precision and responsiveness
  • Reduces play and slop in the shifter mechanism
  • Made from high-quality Teflon material for durability
  • Easy to install with no modifications required

Upgrade your BMW's shifting performance with the BMW Teflon Shifter Bushing Kit. This kit improves shifting precision and responsiveness by reducing play and slop in the shifter mechanism. Crafted from high-quality Teflon material, the bushings offer durability and long-lasting performance. Installation is straightforward, requiring no modifications to your vehicle.

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Teflon Shifter Bushing Kit - E46 E6X E9X F10 F8X F3X
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ECS - Corporate Logo
T#:369438
Part#: 2511-002
In Stock
Sale - Save 40% $ 129.99
$ 77.99 USD
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$ 77.99 USD
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Turner Motorsport BMW Shifter Revitalization Kit

Restore your BMW's shifter to its former precision with Turner Motorsport's top-notch replacement kit. Over time, most BMW shifters lose their original feel due to inferior rubber bushings. These bushings introduce excessive movement in the shift lever, resulting in a shifter that lacks precision.

Introducing Turner Motorsport's solution - a direct-fit, high-strength Teflon bushing. Meticulously crafted from pure Teflon rod, free from any impurities or fillers, these bushings promise extended durability. By eliminating side-to-side play in the shifter rod, they notably enhance the performance of even the stock shifter.

Kit Includes:

  • 4 Teflon Bushing Inserts
  • 2 Carrier Pins

Elevate your BMW's shifting experience with Turner Motorsport's precision-designed replacement kit.

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E46 non-M Performance Polyurethane Differential Bushing Set
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ECS - Corporate Logo
T#:378192
Part#: 002447ECS02KT
In Stock
Sale - Save 25% $ 156.99
$ 117.74 USD
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Sale - Save 25% $ 156.99
$ 117.74 USD
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Worn rubber differential mounts will lead to the differential twisting and shifting around in the rear subframe. Not only will this be noisy but it's bad for driver confidence and bad for the chassis as well. Even on fresh rubber bushings the differential has deflection and twist, especially if the car has been modified for more torque. Since the differential is centrally mounted in the rear subframe, with all suspension mounts interconnected, a differential with too much deflection will affect handling and could even damage the rear subframe.

These 88A urethane E46 diff mounts are much stiffer than stock but still not as solid as our Turner aluminum/Delrin bushings. This set will resist twisting much better than the stock rubber mounts. Included are the two front diff mounts and the rear mount in the cover.

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ECS Tuning Performance Flywheel & Sachs Clutch Kit - E36 E46 E34 ...
For vehicles with production date up to 10/2003
10X Entries For Our Spin To Win Sweepstakes! Eliminate factory dual-mass flywheel and self-adjusting-clutch without the chatter caused by some perf
ECS - Corporate Logo
T#:378580
Part#: 000282ECS01KT
In Stock
Sale - Save 14% $ 1,048.99
$ 899.99 USD
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Sale - Save 14% $ 1,048.99
$ 899.99 USD
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Looking to eliminate your dual-mass flywheel? Overwhelmed with all the options, but hearing complaints about so many of them with rattling or chatter from them? Problem solved. Introducing the all-new Lightweight Performance Flywheel from ECS Tuning. Engineered in-house with the enthusiast daily driver in mind, this is the perfect option for those wanting a lightweight flywheel without the annoying chatter heard from so many other options on the market. 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.

Key Features:

Eliminates factory dual-mass flywheel for:
Crisper shifts
Improved throttle response
Improved acceleration (We measured a .4s decrease in 0-60 times on an otherwise-stock E36 328i!)
Lower replacement cost
Hardened 4140 Chromoly Steel for excellent engagement feel and wear resistance; zinc plated for corrosion resistance
Designed for use with any E34 M5 pressure plate and clutch for OE-type clutch feel
Sprung-hub clutch disc to eliminate chatter at idle and reduce driveline shock loading
Weighs in at just 16.5lbs!
SFI tested and certified to ensure safe operation under all conditions
Includes ECS performance flywheel, clutch kit with throwout bearing, pilot bearing and all flywheel and pressure plate hardware
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 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.

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ECS - Corporate Logo
T#:348998
Part#: 002447ECS01
In Stock
Sale - Save 35% $ 142.99
$ 92.94 USD
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$ 92.94 USD
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Revitalize your driving experience with ECS Tuning's In-House Engineered Performance Polyurethane Differential Bushings. Say goodbye to soft factory rubber bushings and their deflection. These innovative bushings provide a substantial improvement in the connection between your right foot, the chassis, and the wheels. The outcome is a crisper power transfer from the differential to the wheels, resulting in enhanced throttle control for various driving activities. Notably, these polyurethane bushings achieve these benefits without the harshness or vibration often linked to delrin or solid differential mounts.

Manufactured using a robust 88A durometer polyurethane and a black anodized 6061-T6 aluminum sleeve, these bushings offer superior resistance to chemicals, ozone degradation, road salt, and general wear and tear. This translates to an extended service life.

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BMW E46 Z4 Rear Polyurethane Differential Bushing Performance ...
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ECS - Corporate Logo
T#:363117
Part#: 002447ECS03
In Stock
Sale - Save 35% $ 84.99
$ 55.24 USD
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$ 55.24 USD
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BMW E46 Z4 Rear Polyurethane Differential Bushing Performance is the ultimate upgrade for enhancing the connection between your BMW's chassis and differential. Designed by Turner Motorsport, this performance bushing replaces the soft factory rubber with durable polyurethane, offering superior control and response. By minimizing vibrations and reducing deflection, this bushing ensures a more direct and responsive driving experience, making it a must-have for any performance-oriented BMW E46 or Z4 owner.

  • Enhanced Performance: Replaces the soft factory rubber with durable polyurethane for improved driveline response.
  • Reduced Vibrations: Minimizes vibrations between the chassis and differential, providing a more connected driving experience.
  • Increased Durability: Made from high-quality polyurethane, offering long-lasting performance under demanding conditions.
  • Improved Control: Reduces deflection, ensuring a more precise and responsive handling experience.
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ECS Driveshaft Center Support Carrier - E36 E46 Z3 Z4
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ECS - Corporate Logo
T#:37453554
Part#: 013137LA01KT
In Stock
New Item
$ 229.99 USD
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$ 229.99 USD
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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.

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Delrin Shifter Carrier Bushing Kit (Ultra Oval)
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ECS - Corporate Logo
T#:389302
Part#: 017367ECS01AKT
In Stock
Sale - Save 25% $ 79.99
$ 59.99 USD
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$ 59.99 USD
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Shifter slop is a common complaint among all BMW models. Some of that play comes from the bushings where the shifter carrier mounts to the transmission. The original rubber carrier bushings don't last very long and when they get too soft the shifter flops around. These Delrin bushings have almost no deflection and will last much longer than the factory rubber, giving you precise shifting for many years.

Note: this is only one part of the shift linkage and there may be other components that need replacing to improve shifting feel.

New carrier bushing pins are included.

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E36/E46 ECS Performance Lightweight Flywheel
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ECS - Corporate Logo
T#:388103
Part#: 000282ECS01DK
In Stock
Sale - Save 35% $ 700.99
Starting at $ 455.64 USD
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Sale - Save 35% $ 700.99
Starting at $ 455.64 USD
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Lightweight flywheels have proven themselves to be a worthwhile performance enhancement. But with the quicker throttle response and horsepower improvement comes one serious drawback: flywheel chatter. Without the dual-mass flywheel's rubber isolators, a lightweight aluminum flywheel has more rattle than stock. ECS has designed this flywheel using chrom-moly steel and it weighs almost ten pounds less than the stock DMF but not as extreme as full aluminum flywheels. The steel helps dampen vibration and noise so you get near-factory refinement and most of the benefits of a lightweight flywheel: quicker throttle response, better reliability, and more power to the wheels. Zero-balanced and SFI 1.1 certified (material and design has been independently burst tested to ensure quality and safety). This flywheel requires the E34 M5 sprung hub clutch kit. Choose below from the flywheel only or a complete kit.

Modern flywheels are built with additional components that are designed to dampen and minimize vibrations from the engine and transmission. Weight has increased and reliability has decreased. With additional weight more energy is required for it to move. A lightweight flywheel does away with the dual mass design and its additional mass so more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance. And with a single-mass flywheel the unreliable DMF design is eliminated.

Stock flywheel weight - 25.0lbs
ECS flywheel weight = 16.55lbs

This item fits the following BMWs:
1992-1999 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2002 E46 BMW 323i 323ci 325i 325ci 328i 328ci 330i 330ci (5-speed)
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i (5-speed) 

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Performance Flywheel & OEM Clutch Kit
For vehicles with production date up to 10/2003
10X Entries For Our Spin To Win Sweepstakes! Eliminate factory dual-mass flywheel and self-adjusting-clutch without the chatter caused by some perf
ECS - Corporate Logo
T#:381253
Part#: 000282ECS01KT1
Ships on Jul 18, 2025
Sale - Save 5% $ 1,570.99
$ 1,492.44 USD
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Sale - Save 5% $ 1,570.99
$ 1,492.44 USD
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ECS - Corporate Logo
T#:378219
Part#: 002447ECS04KT
In Stock
Sale - Save 20% $ 84.99
$ 67.99 USD
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Sale - Save 20% $ 84.99
$ 67.99 USD
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Your rear differential is indirectly connected to your right foot through the engine and driveline, and connected to the seat of your pants through the chassis. Soft factory rubber differential bushings absorb vibrations between chassis and differential, providing comfort and softness in both of these connections.

Enter ECS Tuning's In-House Engineered Performance Polyurethane Differential Bushings. By eliminating the deflection factory rubber bushings permit, the connection between your right foot (and your seat) to the wheels is improved. Removal of this slop allows for crisper power transfer from differential to wheels, which means better throttle control while carving a canyon road, drag racing, sliding the rear end out, or just driving to work. This is achieved without the harshness or vibration associated with delrin or solid differential mounts.

Featuring a tough 88A durometer polyurethane and Black anodized 6061-T6 aluminum Sleeve, our Performance Polyurethane Differential Bushings are more resistant to chemicals, ozone degradation, road salt, and general wear and tear than factory rubber bushings, resulting in a longer service life.

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