BMW Drivetrain Parts for BMW Z4 M Roadster S54 (2003-2008)

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:
Rogue Engineering Transmission Mounts - Pair - Multiple BMWs
Rogue Engineering Transmission Mounts - Pair - Multiple BMWs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Rogue Engineering - Corporate Logo
T#:641617
Part#: TM
In Stock
$ 69.00 USD
Free Shipping
Add to Wish List
$ 69.00 USD
Free Shipping
Add to Wish List
Unlike other aftermarket mounts, the mounting plate and studs of our mounts have been Zinc-plated to prevent corrosion. Rogue Engineering Transmission Mounts are sold as a pair, and come with Grade 8 Zinc plated hardware. Rogue Engineering transmission mounts are designed with street comfort in mind while still reducing left and right movement of the transmission. By using a cylindrical shape instead of the factory hourglass like design and utilizing Neoprene rubber deflection can be significantly reduced, minimizing unwanted transmission movement while maintaining vibration dampening characteristics.
Show More Show Less
Bav Auto Universal Flex Disc "Guibo" - E36 E46 E34 Z3 Z4 M Models
Bav Auto Universal Flex Disc "Guibo" - E36 E46 E34 Z3 Z4 M Models ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:1135777
Part#: 26112226527
In Stock
Sale - Save 10% $ 73.99

This product was last offered at the strikethrough price on
05-03-2026

$ 66.59 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 10%
$ 73.99

This product was last offered at the strikethrough price on
05-03-2026

$ 66.59 USD
Free Shipping on orders $49 and up
Add to Wish List
This Bav Auto replacement flex disc (aka: the guibo) is a vibration dampener mounted on the back of the transmission which connects to the driveshaft. When it has worn, it can produce knocking sounds and a terrible vibration throughout the car. It's especially noticeable at low speeds and when starting from a standstill. Oil leaking from the back of the transmission will significantly reduce its life. This can also be used as an upgrade on the E30 M3. It has much more rubber in between the bolt holes which makes it last longer. This is 5mm thicker than the stock E30 flex disc so adjustment of the 2-piece driveshaft may be required. The original flex disc bolts can be re-used.
Show More Show Less
GSP Rear Axle Assembly - Left - E46, Z4
GSP Rear Axle Assembly - Left - E46, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
GSP North America - Corporate Logo
T#:389714
Part#: NCV27500
Ships in 3 Business Days
$ 178.99 USD
Free Shipping
Add to Wish List
$ 178.99 USD
Free Shipping
Add to Wish List

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

 

This item fits the following BMWs: 

E46 BMW M3

E85 BMW Z4M

Show More Show Less
GSP Rear Axle Assembly - Right - E46, Z4
GSP Rear Axle Assembly - Right - E46, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
GSP North America - Corporate Logo
T#:389701
Part#: NCV27516
Ships in 3 Business Days
$ 183.99 USD
Free Shipping
Add to Wish List
$ 183.99 USD
Free Shipping
Add to Wish List

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

 

This item fits the following BMWs: 

E46 BMW M3

E85 BMW Z4M 

Show More Show Less
Bav Auto Automatic Transmission Filter Kit - E39 E46 Z4 (A5S325Z Transmission)
Bav Auto Automatic Transmission Filter Kit - E39 E46 Z4 (A5S325Z Tran...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:639803
Part#: 24341423376
Ships on Aug 24, 2026
Sale - Save 20% $ 29.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 20%
$ 29.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Remember to service your transmission at the recommended intervals to increase your transmission's life span and reliability! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
Show More Show Less

Select Vehicle

BMW Mini
Clear Vehicle

Purpose

Category

Brand

Price

$
$

Special Offers

Shipping