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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South Bend - Stage 1 HD Clutch Kit
For Vehicles With SMG Transmission Only
South Bend Clutch - Corporate Logo
T#:28371240
Part#: K03064HD
Ships in 2 Business Days
$ 753.99 USD
$ 753.99 USD
Upgrade to South Bend Clutch's Stage 1 HD Clutch Kit for your 2.5L E85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13" Disc Diameter: 9.44" Disc Material: Organic Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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DKM - Corporate Logo
T#:24610565
Part#: MR-006-054
Special Order: No Guaranteed ETA
$ 1,699.99 USD
Free Shipping on orders $49 and up
Rated for upwards of 650 ft/lbs, this multi-plate (Twin Disc) Clutch is sure to have the clamping force your E46 M3 needs. Equipped with dual 184mm ceramic discs, DKM (Der Kupplungmeister) has mastered the art of packing loads of clamping force into a small space. Kit Includes: 184mm Ceramic Clutch Discs - 2 Flywheel - 1 Pressure Plate - 1 All Hardware Throwout Bearing - 1 Clutch Alignment Tool - 1
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South Bend - Stage 1 HD Clutch Kit
For Vehicles With Manual Transmission
South Bend Clutch - Corporate Logo
T#:28371157
Part#: K03063HD
Ships in 2 Business Days
$ 794.99 USD
$ 794.99 USD
Upgrade to South Bend Clutch's Stage 1 HD Clutch Kit for your 2.5L E85 Z4! Input Shaft Spline Count: 10 Input Shaft Diameter: 29mm Disc Diameter: 9.5" Disc Material: Organic Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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South Bend Clutch - Corporate Logo
T#:28337890
Part#: K03060HD
Ships in 2 Business Days
$ 802.99 USD
Free Shipping on orders $49 and up
Upgrade to South Bend Clutch's Stage 1 HD Clutch Kit for your e85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13” Disc Diameter: 9.44" Disc Material: Organic Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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South Bend Clutch - Corporate Logo
T#:401469
Part#: K03070-HD-TZ
Ships in 2 Business Days
$ 1,008.99 USD
Free Shipping
$ 1,008.99 USD
Free Shipping
Upgrade to South Bend Clutch's Stage 2 Endurance Clutch Kit for your 3.2L E85 or E86 Z4 M Coupe and Roadster! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13" Disc Diameter: 9.44" Disc Material: Kevlar Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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South Bend - Stage 2 Endurance Clutch Kit
For Vehicles With SMG Transmission Only
South Bend Clutch - Corporate Logo
T#:28404573
Part#: K03064HDTZ
Ships in 2 Business Days
$ 1,008.99 USD
$ 1,008.99 USD
Upgrade to South Bend Clutch's Stage 2 Endurance Clutch Kit for your 2.5L E85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13" Disc Diameter: 9.44" Disc Material: Kevlar Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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South Bend Clutch - Corporate Logo
T#:28337948
Part#: K03060HDTZ
Ships in 2 Business Days
$ 1,057.99 USD
$ 1,057.99 USD
Upgrade to South Bend Clutch's Stage 2 Endurance Clutch Kit for your e85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13” Disc Diameter: 9.44" Disc Material: Kevlar Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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South Bend Clutch - Corporate Logo
T#:28337862
Part#: K03059HDTZ
Ships in 2 Business Days
$ 932.99 USD
Free Shipping on orders $49 and up
Upgrade to South Bend Clutch's Stage 2 Endurance Clutch Kit for your e85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13” Disc Diameter: 9.44" Disc Material: Kevlar Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: Yes Flywheel Included: No
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South Bend - Stage 2 Daily Clutch Kit
For Vehicles With SMG Transmission Only
South Bend Clutch - Corporate Logo
T#:28404572
Part#: K03064HDO
Ships in 2 Business Days
$ 880.99 USD
$ 880.99 USD
Upgrade to South Bend Clutch's Stage 2 Daily Clutch Kit for your 2.5L E85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13" Disc Diameter: 9.44" Disc Material: Organic Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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South Bend Clutch - Corporate Logo
T#:28337924
Part#: K03060-HD-DXD-B
Ships in 2 Business Days
$ 1,121.99 USD
$ 1,121.99 USD
Upgrade to South Bend Clutch's Stage 2 Drag Clutch Kit for your e85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13” Disc Diameter: 9.44" Disc Material: Ceramic Disc Style: 6-Puck Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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DKM - Corporate Logo
T#:24610569
Part#: MRX-006-005
Special Order: No Guaranteed ETA
$ 1,799.99 USD
Free Shipping on orders $49 and up
Rated for upwards of 850 ft/lbs, this multi-plate (Twin Disc) Clutch is sure to have the clamping force your E46 M3 needs. Equipped with dual 215mm ceramic discs, DKM (Der Kupplungmeister) has mastered the art of packing loads of clamping force into a small space. Kit Includes: 215mm Ceramic Clutch Discs - 2 Flywheel - 1 Pressure Plate - 1 All Hardware Throwout Bearing - 1 Clutch Alignment Tool - 1
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South Bend - Stage 2 Drag Clutch Kit
For Vehicles With SMG Transmission Only
South Bend Clutch - Corporate Logo
T#:28404571
Part#: K03064-HD-DXD-B
Ships in 2 Business Days
$ 1,072.99 USD
$ 1,072.99 USD
Upgrade to South Bend Clutch's Stage 2 Drag Clutch Kit for your 2.5L E85 Z4! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13" Disc Diameter: 9.44" Disc Material: Ceramic Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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OS Giken - Corporate Logo
T#:34382134
Part#: LSD-TUNE
Ships in 3 Business Days
$ 150.00 USD
Free Shipping
$ 150.00 USD
Free Shipping
Clutch Masters Stage 2 Clutch Kit - FX200
For Vehicles with 5-Speed Transmission and 10 Spline Input Shaft
For Vehicles with S5D250G-TAJS Transmission (5-Speed with 10-Spline Input Shaft)
Clutch Masters - Corporate Logo
T#:567243
Part#: 03005-HDKV-D
Ships in 8 Business Days
$ 731.99 USD
Free Shipping
$ 731.99 USD
Free Shipping

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version. 

  • FX200 (Stage 2)

  • High performance street system

  • Holding capacity 70% over stock

  • Heavy-Duty reinforced pressure plate

  • Hi-Leverage™ pressure ring design

  • Sprung hub/cushioned disc

  • Steel-backed kevlar friction material

*Does not include flywheel.

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Clutch Masters Stage 2 Clutch Kit - FX200
For Vehicles with 5-Speed Transmission and 10 Spline Input Shaft
For Vehicles with S5D250G-TAJS Transmission (5-Speed with 10-Spline Input Shaft)
Clutch Masters - Corporate Logo
T#:567245
Part#: 03005-HDKV-R
Ships in 8 Business Days
$ 731.99 USD
Free Shipping
$ 731.99 USD
Free Shipping

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Ridged Disc version. 

  • FX200 (Stage 2)

  • High performance street system

  • Holding capacity 70% over stock

  • Heavy-Duty reinforced pressure plate

  • Hi-Leverage™ pressure ring design

  • Ridged hub/ disc

  • Steel-backed kevlar friction material

*Does not include flywheel.

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Clutch Masters Stage 1 Clutch Kit - FX100
For Vehicles with S5D250G-TAJS Transmission (5-Speed with 10-Spline Input Shaft)
Clutch Masters - Corporate Logo
T#:567240
Part#: 03005-HD00-R
Ships in 8 Business Days
$ 522.99 USD
Free Shipping
$ 522.99 USD
Free Shipping

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Ridged Disc version. 

  • FX100 (Stage I)

  • High performance street system

  • Holding capacity 70% over stock

  • Heavy-Duty reinforced pressure plate

  • Hi-Leverage™ pressure ring design

  • Ridged hub

  • Steel-backed organic friction material

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Redline - Corporate Logo
T#:201458
Part#: 21404
Ships on Oct 21, 2026
$ 18.99 USD
Free Shipping on orders $49 and up
  • Recommended for API CJ-4/CI-4 Plus/CI-4/CF/CH-4/CF-4
  • Popular for Light Duty trucks including Chevrolet Duramax, Dodge Cummins, Ford Power Stroke
  • Best choice in medium and heavy-duty diesel truck engines for maximum durability
  • Improved drain intervals provide excellent value for commercial fleet use
  • Also for API SM/SL/SJ/SH/SG/CF and ACEA A3/B3/B4 E7/E9, MB 228.3
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    JB Racing - Corporate Logo
    T#:40748575
    Part#: 520010240SGA
    Ships on Oct 21, 2026
    $ 868.00 USD
    Free Shipping on orders $49 and up
    This lightened steel flywheel is specifically designed (and approved) for use in Grand-Am road racing but can also be used as a mild street upgrade if a full aluminum lightweight flywheel is not called for. The Grand-Am flywheel is 20% lighter than stock to meet the rules for the GS and ST classes.Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. 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.

    In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. The engine revs much faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

    Grand-Am approved this flywheel to be used with a factory E36 M3 clutch. This opens up a lot of clutch and pressure plate options but we typically used this with a stock Sachs OEM clutch kit. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches.

    Lightweight flywheels are considered 'single-mass' flywheels because they do not have the same dampening designs as an original 'dual-mass' flywheel. With a single-mass design more noise and vibration may be noticeable. There are steps you can take to minimize the noise - heavier weight transmission oil and clutch discs with anti-rattle springs (sprung-hub clutch). In addition to the standard replacement clutches, we also sell Sachs Performance sprung hub clutches that also work with the JB flywheels.

    If being used on a 330i 6-speed or Z4 6-speed an additional pilot bearing hub is required. Select your appropriate model and transmission from the list below.

    Stock Flywheel Weight = 25.0lbs
    JB Flywheel Weight = 20.0lbs

    This item fits the following BMWs:
    2001-2002 E46 BMW 330i 330ci 5-speed
    2003-2006 E46 BMW 330i 330ci 6-speed
    2001-2006 E46 BMW M3
    1998-2002 Z3 BMW Z3 M Roadster M Coupe
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i
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    ECS Performance Clutch And Flywheel Kit & 70A Engine and Transmission...
    For vehicles with 5-speed transmission only and a production date up to 10/2003 (10-Spl...
    Enthusiast Bundles - Corporate Logo
    T#:37419787
    Part#: 048498EBKT
    In Stock
    $ 1,430.91 USD
    $ 1,430.91 USD

    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.

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    Enthusiast Bundles - Corporate Logo
    T#:34919067
    Part#: 019744TMS01A2KT
    In Stock
    $ 132.99 USD
    Free Shipping on orders $49 and up

    MAGNETIC FENDER COVER:

    Protect your finish when working under the hood with a high quality Turner fender cover. Made from a synthetic leather layer with a goose flannelette backing for durability and protection. The Turner fender cover holds a tight grip to your fender or core support with four 9.5" magnets sewn into the top layer.


    Features:

    • Durable synthetic leather with the Turner logo
    • Soft goose flannelette backing
    • Four 9.5" integrated magnets


    Dimensions:

    •  Extra Long 20" x 47"


    TELESCOPING LED MIRROR:

    You are going to love this tool. This Schwaben telescoping lighted mirror can get you out of a jam when you need to look at something you can not see any other way. Use with or with out the mirror attached. Lighting can reflect on mirror to light at many angles. Great for finding missing parts beneath engine block or oil leaks.

    Features:

    • Handy pocket clip
    • Pivoting quick attach mirror for perfect viewing at any angle.
    • Extends up to 26 1/4" for hard to reach places.
    • Collapsed length 6.5" without mirror attached, 9.5" with 
    • High quality mirror provided a perfect reflection.
    • Easy on and off. Turns on when extended and off when collapsed.
    • 44,000 MCD brightness.
    • Long life span up to 100,000 hours on LED bulb.
    • Operates on 3 AG3/LR41 batteries 
    • Includes batteries


    TELESCOPING MAGNET:

    This Schwaben telescoping magnet is a great addition to any tool box. Magnet is rated to pickup 3.5 lbs. Stainless steel shaft is 7" collapsed and 26" extended. Magnet is encased in a aluminum sleeve to help prevent side of magnet from sticking. Cushion grip rubber handle works great with dry or oily hands.


    MAGNETIC PARTS TRAYS:

    Stop losing nuts, blots, and screws. The Schwaben magnetic parts tray has a large 4-3/8 inch diameter stainless steel bowl with a rubber-coated magnetic base that won't mar painted surfaces.

    Attach the tray to any ferrous metal on the vehicle, and toss in your steel fasteners as you remove them. The magnet holds them safely in place until you are ready to use them again. Works right side up or inverted for under-car repairs.

    A simple, effective solution to a common problem.


    WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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    South Bend Clutch - Corporate Logo
    T#:28404593
    Part#: K03070HDO
    Back Ordered
    $ 880.99 USD
    Free Shipping on orders $49 and up
    Upgrade to South Bend Clutch's Stage 2 Daily Clutch Kit for your 3.2L E85 or E86 Z4 M Coupe and Roadster! Input Shaft Spline Count: 22 Input Shaft Diameter: 1.13" Disc Diameter: 9.44" Disc Material: Organic Disc Style: Full-Face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: No Flywheel Included: No
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    Redline - Corporate Logo
    T#:394647
    Part#: 80402
    In Stock
    $ 17.99 USD
    Free Shipping on orders $49 and up

    Red Line CV-2 Grease

    Experience unparalleled performance with Red Line CV-2 Grease, expertly crafted to endure extreme temperatures and pressures found in high-performance wheel bearings and CV-joints. This premium grease surpasses both conventional and synthetic options with its exceptional high-temperature stability, superior extreme-pressure protection, and water resistance. Operating effectively in temperatures spanning from -100°F to 500°F, it offers outstanding oxidation and corrosion resistance, minimal evaporation and oil separation, and has minimal impact on rubber seals. Expect a remarkable 200% to 800% increase in bearing life due to the exceptional extreme-pressure performance and synthetic oil fluidity. Its red moly compound outshines black moly disulfide lubricants, ensuring superior lubrication.

    Red Line CV-2 Grease finds application not only in automotive settings but also in industrial environments. It excels in high-temperature alternator bearings, high-speed ball bearings, conveyor bearings, worm gear drives, servo mechanisms, and other scenarios prone to fretting wear and corrosion. Its consistency and extreme-pressure performance endure high-temperature and high-shear conditions, extending the performance life of lubricated components. Despite darkening after high-temperature use, its efficacy remains unaffected. While compatible with some petroleum-based greases, it's recommended to clean out old grease thoroughly for optimal lubrication performance and to avoid grease incompatibility.

    Product features:

    • Outperforms conventional or synthetic greases and lubes
    • Endures extreme temperatures and pressures in various automotive components
    • Excellent high-temperature stability, extreme-pressure protection, and water resistance
    • Operates within temperatures ranging from -100°F to 500°F
    • Resistant to oxidation and corrosion, with minimal evaporation and oil separation affecting rubber seals
    • Contains organic moly for chassis lubrication and high temp/high-speed industrial equipment
    • Synthetic fluidity increases bearing life up to 200%
    • Darkening after high-temp use doesn't impact performance
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