BMW Drivetrain Parts for BMW Z4 M Roadster S54 (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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Clutch Switch
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:31092583
Part#: 35426876898
In Stock
$ 31.99 USD
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Clutch Fork Lever
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URO - Corporate Logo
T#:16441625
Part#: 21511223302
In Stock
$ 27.55 USD
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URO Shifter Arm Bushing - 25111222015
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URO - Corporate Logo
T#:28271179
Part#: 25111222015
In Stock
$ 20.99 USD
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This bushing is designed for use at the rear side of the shifter arm, providing support for the rear section connected to the body.

Key Features:

Ensures a perfect fit Instantly replaces worn or damaged OE shift lever bushings, restoring smooth manual transmission shifting Constructed from high-strength materials for long-lasting durability Manufactured to factory specifications for easy installation and optimal shifting performance Resistant to heat and ozone for extended reliability

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BMW Shift Rod Joint
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URO - Corporate Logo
T#:403362
Part#: 25117580281
In Stock
$ 26.99 USD
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This shift rod joint includes a lock ring, foam bushing, and integrated shims

OS Giken - Corporate Logo
T#:34382136
Part#: BM237HAKT
Ships in 2 Business Days
$ 2,100.00 USD
Free Shipping on orders $49 and up
Upgrade to a better performing LSD, includes tune.
OS Giken - Corporate Logo
T#:1387
Part#: BM237-HA
Ships in 2 Business Days
$ 1,950.00 USD
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$ 1,950.00 USD
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The M Dynamic limited slip unit on the M3 is designed to be a pure street car differential. It's simply not up to the rigors of professional or amateur racing. The OS Giken Super Lock LSD is giant step up in from a stock M3 lsd unit. It's ready for the extreme conditions of racing, offers 100% progressive locking capability, and is able to do this while operating smoothly and quietly. It's use of advanced technologies that make it perfect for both street cars AND pro race cars... and everything in between. We're excited to be carrying the OS Giken LSD unit in our performance catalog, as we've been using them in our own Championship winning M3 race cars.

OS Giken incorporated revolutionary new ideas when developing the their own limited slip diff, utilizing their accumulated racing knowledge and experience and over 4 years of development. Their design uses an unprecedented number of friction plates (up to 28 total!) for better locking force, better engagement/disengagement, and less generated heat. The end result of their efforts is the OS Giken's OS Super Lock LSD which offers incredible durability and reliability on street and track driven BMWs. The use of highest quality materials, precise machining, forged gears and sound engineering makes this LSD durable and reliable enough for road racing performance (which we can personally vouch for!). This is such a great design, in that it can be used in any situation -- whether it's for a street car, or a 100% Professional race car. Zero break-in required. Super smooth and quiet engagement, and 100% progressive locking capability. Professional installation is recommended.

This Limited Slip Differential Unit fits the following BMWs:
2001-2006 E46 M3 coupe & convertible
2008-2013 E9X M3 coupe & convertible
1991-1995 E34 M5 sedan
1999-2003 E39 M5 sedan
2006-2008 E85 Z4M Z4 M Coupe, Z4 M Roadster
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Differential Input Shaft Seal - Priced Each
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:49335120
Part#: 33121213949
In Stock
$ 18.99

This product was last offered at the strikethrough price on
07-27-2026

$ 15.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 18.99

This product was last offered at the strikethrough price on
07-27-2026

$ 15.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Replaces cracked or hardened valve body seals
Transmission Mount
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URO - Corporate Logo
T#:377308
Part#: 22316771219
In Stock
$ 7.99 USD
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With bad transmission mounts, excessive vibration and noise is transferred to the cabin. The rubber in the mounts wear out over time and cause too much movement in the drivetrain. Replace them when wear is detected to keep everything tight.
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Transmission Plug - Priced Each
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URO - Corporate Logo
T#:593135
Part#: 23117531356
In Stock
$ 12.53 USD
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$ 12.53 USD
Free Shipping on orders $49 and up
Replacement fill/drain plug with sealing gasket

URO - Corporate Logo
T#:399013
Part#: 31206777789
In Stock
$ 7.99 USD
Free Shipping on orders $49 and up
Dust caps are a vital component to long wheel bearing life. Keeping your bearings sealed and free from debris will secure a long life. Also while also providing a clean look while your wheel is removed.
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URO BMW Wheel Hub Dust Cap - Front Inner Left/Right
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37925877
Part#: 31206777788
Ships on Jan 5, 2027
$ 5.99 USD
Free Shipping on orders $49 and up

URO Front Inner Left/Right BMW Wheel Hub Dust Cap

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.

Key Benefits:

  • Direct-fit OE replacement for seamless installation and a perfect seal
  • Protects wheel bearings from dirt, moisture, and debris to prevent premature wear
  • Durable construction resists heat and road vibrations for long-lasting performance
  • Restores proper bearing protection for improved reliability and efficiency
  • Precision-engineered to meet BMW specifications for an exact fit

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.

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URO - Corporate Logo
T#:43750219
Part#: 33107505604
In Stock
$ 10.00 USD
Free Shipping on orders $49 and up
$ 10.00 USD
Free Shipping on orders $49 and up
Maintaining a proper amount of fluid in the rear differential is vital to the performance and longevity of the differential. If a leaking shaft seal is left untouched, the results could be catastrophic. Two seals required per vehicle.
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OS Giken - Corporate Logo
T#:34382134
Part#: LSD-TUNE
Ships in 2 Business Days
$ 150.00 USD
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$ 150.00 USD
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