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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Differential And LSD Tune
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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.
E46 M3, E9X M3, E34 M5, E39 M5, Z4 M OS Giken Super Lock Limited Slip...
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OS Giken - Corporate Logo
T#:1387
Part#: BM237-HA
Ships in 2 Business Days
$ 1,950.00 USD
Free Shipping
$ 1,950.00 USD
Free Shipping
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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CV Joint Boot Clamp Band Tool
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Performance Tool - Corporate Logo
T#:5122269
Part#: W83011
In Stock
$ 23.31 USD
Free Shipping on orders $49 and up
Helpful tool for proper axle boot installations.

Fly Wheel Turner
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Performance Tool - Corporate Logo
T#:1809145
Part#: W80510
Ships in 1 Business Day
$ 34.69 USD
Free Shipping on orders $49 and up
For turning and holding flexplates and flywheels.

Quart & Gallon Fluid Pump
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Performance Tool - Corporate Logo
T#:5095675
Part#: W1139
Ships in 3 Business Days
$ 10.99 USD
Free Shipping on orders $49 and up
Unique double threaded cap fits both quart and gallon size containers.
Ear-Type Clamp Pliers
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Performance Tool - Corporate Logo
T#:1855988
Part#: W83013
Ships in 3 Business Days
$ 20.40 USD
Free Shipping on orders $49 and up
Used on ear-type clamps found on CV joints, hoses, and some fuel filters.

Multi Use Transfer Pump
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Performance Tool - Corporate Logo
T#:1809134
Part#: W1145
Ships in 1 Business Day
$ 18.80 USD
Free Shipping on orders $49 and up
Quickly and easily transfer any fluid.
LSD Tune For OS Giken Differential
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OS Giken - Corporate Logo
T#:34382134
Part#: LSD-TUNE
Ships in 2 Business Days
$ 150.00 USD
Free Shipping
$ 150.00 USD
Free Shipping

Fluid Transfer Pump
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Performance Tool - Corporate Logo
T#:1809158
Part#: W1141
In Stock
$ 10.19 USD
Free Shipping on orders $49 and up
Fits all standard gallon bottles