BMW Drivetrain Parts

N54/N55 BMW Automatic Transmission Cooler - E9X 335

T#:1347205

Part#: N54N55TRANSCOOL

In Stock

$ 444.99

This product was last offered at the strikethrough price on
06-16-2026

$ 399.00 USD

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$ 399.00 USD

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Everyone knows that heat is the enemy of your automatic transmission. And everyone knows that higher power levels generate more transmission fluid heat. Now you can extend the life of your automatic transmission by installing the new Burger Motorsports High Capacity Trans Cooler kit. This unique plug-and-play kit replaces your factory coolant to trans fluid heat exchanger with a high-capacity fender-mounted air-to-trans fluid radiator. Includes all mounting hardware, lines, and coolant caps required for installation. Installs inside the driverside fender providing ample airflow over the large cooling core via existing openings. The result is dramatically reduced transmission temperature and extended transmission life. This kit is strongly suggested for any BMW E chassis automatic running larger than factory turbos. FEATURES AND BENEFITS Dissipates excess transmission fluid heat Reduces transmission fluid temperature Increases transmission life when racing Increases transmission oil capacity Fitment: 2006-2011 E90 Sedan 335i/335ix 2006-2013 E90 E91 Sedan/Touring 335d (M57 diesel) 2006-2011 E91 Touring 335i/335ix 2011-2013 E92 Coupe 335is 2007-2013 E92 Coupe 335i/335ix 2006-2013 E93 Convertible 335i/335ix Compatible with both RHD and LHD vehicles. Not compatible with manual transmissions.

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Burger Motorsports Differential Support Bracket Brace - F-Chassis BMW...

T#:637547

Part#: BMS-DSBB-F

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Starting at $ 129.00 USD

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Starting at $ 129.00 USD

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The BMS differential brace attaches the rear differential to the subframe allowing better launches, less wheel hop, and a more stable feeling rear chassis. Their unique one-piece construction eliminates welding weak points common on similar units. No logos or markings are visible for a stealth OEM appearance.

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BMW E9X 335i BMS Differential Support Bracket Brace - Small Case ...

T#:1316770

Part#: E9XDIFFBRACE-SM

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$ 99.00 USD

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$ 99.00 USD

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BMW E9X 335i BMS Differential Support Bracket Brace - Small Case

The BMW E9X 335i BMS Differential Support Bracket Brace - Small Case is a high-performance upgrade designed to enhance the stability and durability of the differential mount. Turner Motorsport offers this precision-engineered brace to reduce flex and movement of the differential, ensuring improved power transfer and handling. Ideal for high-performance driving or track use, this brace helps maintain proper alignment and extends the lifespan of your differential components.

Benefits:

Enhances differential stability by reducing flex and movement
Improves power transfer and handling performance
Precision-engineered for a perfect fit and reliable performance
Ideal for high-performance driving and track use
Extends the lifespan of differential components
Made from high-quality materials for durability and strength

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BMS Differential Support Bracket Brace - BMW 135i / E9x 335i - Large ...

T#:1316771

Part#: E9XDIFFBRACE-LG

Ships in 1 Business Day

$ 99.00 USD

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$ 99.00 USD

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MINI R53/R56 OS Giken Super Lock Racing Limited Slip Differential ...

T#:200230

Part#: MN024-HA

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$ 1,650.00 USD

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$ 1,650.00 USD

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If your MINI is only for competition use - autocross, time trial, or racing - this OS Giken LSD may be a better option than the standard 1.5-way unit. This race-spec LSD was developed over several seasons of competitive autocross. It uses a new high pressure ring for quicker response time and faster lockup. This makes it ideal for quick transitions and rapid on/off throttle motions typically encountered on the track. It's a one-way lockup so the car stays predictable under braking and gives the driver more feedback. For street use we prefer the normal 1.5-way setup because it's more progressive during lockup.

The biggest shortcoming of any MINI is not the lack of power - it's being able to put all of its useable power to the ground! The Cooper S is basically a one-wheel drive car and sending 200+ hp through that one tire does not live up to its full potential. A limited-slip differential is essential to any highly-tuned FWD car. The OS Giken Super-Lock is one of the most advanced clutch-type differentials on the market, and a favorite of autocrossers and road racers. The OS LSD for the MINI features ten clutch discs for a smooth and progressive lockup. By putting all of your available power to the ground you're at an instant advantage over the stock open-type differential. You'll be able to power through corners and on rough surfaces instead of uselessly spinning a wheel. Understeer is reduced by giving more bite to the tire that has the most traction. With an LSD in your MINI Cooper S you'll wonder why it wasn't first on your list to begin with (or why MINI/BMW left it out in the first place...).

The MNI OS Giken LSD uses a special 80W250 fluid that must be purchased separately.

This item fits the following BMWs:
2002-2006 R53 MINI MINI Cooper S (6MT manual transmission only)
2007-2013 R56 MINI MINI Cooper S (6MT manual transmission only)

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Fall-Line Motorsports - Aluminum DCT Hydraulics Cover - Multiple BMW ...

T#:5498480

Part#: FLM-DCT-HC

In Stock

$ 899.99

This product was last offered at the strikethrough price on
06-01-2026

$ 845.99 USD

Limited Qty Sale

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$ 899.99

This product was last offered at the strikethrough price on
06-01-2026

$ 845.99 USD

Limited Qty Sale

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Like the DCT oil pan, the plastic OEM hydraulics cover is prone to fatiguing from heat cycling; not ideal considering the important parts that reside behind it. And also like it's oil pan sibling, the Fall-Line hydraulics cover uses a bespoke Viton O-Ring that resides within a clever internal channel. Viton O-Rings, due to their exceptional resistance to temperature extremes (-20°F to 400°F operating temp) and low gas permeability, have incredible aging characteristics and therefore eliminate the need for regular replacement.

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Turner Motorsport Shifter Rebuild & Upgrade Kit - F8X M2 M3 M4 (up to...

T#:588741

Part#: PBTSRKF8XKT

In Stock

Sale - Save 18% $ 324.06

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

$ 266.45 USD

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Sale - Save 18%

$ 324.06

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

$ 266.45 USD

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Tired of dealing with excess shifter slop and a mushy shifter? The Turner Shifter Rebuild & Upgrade Kits will restore your shifter's crisp feel and eliminate excessive movement that develops over time with wear. Included in this kit are all the common wear components and upgraded bushings that will give you a tighter shifting feel than traditional rubber bushings and will resist wear significantly longer. This kit is perfect to restore your driving pleasure and will be the last shifter rebuild you will ever need! See the included components under Kit Contents below.

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E46 M3, E9X M3, E34 M5, E39 M5, Z4 M OS Giken Super Lock Limited Slip...

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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OS Giken E9X M3 Clutch Overhaul Kit (for Grand Am Legal Racing Flywhe...

T#:2209

Part#: BM533-BF6EA

Ships in 2 Business Days

$ 999.99 USD

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$ 999.99 USD

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This kit includes parts needed to overhaul the OS Giken E90/E92 M3 Grand Am legal clutch kit, including clutch discs (2), center plates, and cover bolts (all). As used in the Grand Am KONI Challenge GS class V8 M3s, including both Turner Motorsport E92 M3 race cars.

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OS Giken E9X M3 Clutch Alignment and Installation Tool

T#:2193

Part#: BM533-EB

Ships in 2 Business Days

$ 90.00 USD

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$ 90.00 USD

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This rugged tool simulates the input shaft of the 2008-2013 E9X M3 transmission, for easy installation of the OS Giken racing clutch kit. This tool is simply a must if you will be installing a clutch into the newer V8 model M3. This is a OS Giken part but can be used for other E9X M3 clutch kits where a more durable metal tool is called for.

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E9X M3 OS Giken High Performance Racing Clutch & Flywheel Kit ...

T#:338592

Part#: BM533-BF6

Ships in 2 Business Days

Starting at $ 2,150.00 USD

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Starting at $ 2,150.00 USD

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This racing flywheel and clutch kit is made by renowned drivetrain specialist OS Giken. Complete fly wheel & clutch setup as used on our own TMS E92 M3 race cars. This setup is ideal for both endurance racing or high horsepower applications that have very limited street use but require more clamping power than stock. It has been approved for use in the GRAND AM Continential Challenge GS race class, approved by GRAND AM rules and regulations.

Includes flywheel, clutch discs (2 disc clutch), center plate, pressure plate, aluminum cover, 360 degree housing (for clutch assembly), cover bolts, flywheel bolts, throw-out bearing, and release sleave assembly. Weighs 5% less than the stock E90/E92 M3 flywheel and clutch setup. This setup is intended for racing use only (not for daily driven street cars.) We recommend using the OS Giken clutch alignment tool during installation (sold separately).

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Fall-Line Motorsports - Ultimate DCT Track Package - Multiple BMW Fit...

T#:5498483

Part#: FLM-DCT-PKG

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$ 1,999.00 USD

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$ 1,999.00 USD

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The Ultimate DCT Track Package. Period! Fall-Line has designed an incredible 6061-T6 aluminum oil pan and matching hydraulics cover for DCT cars. The plastic OEM parts are prone to failure from heat-cycling and use a brittle gasket that requires replacement over time. The Fall-Line parts use a bespoke Viton O-Ring that resides within a clever internal channel. Viton O-Rings, due to their exceptional resistance to temperature extremes (-20°F to 400°F operating temp) and low gas permeability, have incredible aging characteristics and therefore eliminate the need for regular replacement.

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MINI R Chassis OS Giken Clutch Kit - STR Series

T#:30164597

Part#: MN023-BJ5

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$ 1,920.00 USD

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$ 1,920.00 USD

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MINI R Chassis OS Giken Clutch Kit - STR Series enhances performance and durability for your BMW or MINI. This high-performance clutch kit from OS Giken is designed specifically for MINI R chassis models, offering improved torque capacity and durability. With its STR series design, it ensures smooth engagement and precise control, perfect for both street and track applications. Engineered with high-quality materials, this clutch kit provides reliable performance under demanding conditions.

Enhances performance and durability
Designed specifically for MINI R chassis models
Improved torque capacity for enhanced power transfer
STR series design ensures smooth engagement
Suitable for both street and track use

Upgrade your BMW or MINI R chassis with the MINI R Chassis OS Giken Clutch Kit - STR Series for superior clutch performance and reliability.

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Fall-Line Motorsports - Aluminum DCT Oil Pan - Multiple BMW Fitments ...

T#:5498479

Part#: FLM-DCT-PAN

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$ 899.00 USD

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$ 899.00 USD

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The plastic OEM pan is prone to leaking and uses a brittle gasket that requires replacement over time. The Fall-Line pan uses a bespoke Viton O-Ring that resides within a clever internal channel. Viton O-Rings, due to their exceptional resistance to temperature extremes (-20°F to 400°F operating temp) and low gas permeability, have incredible aging characteristics and therefore eliminate the need for regular replacement.

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OS Giken Throw Out Bearing Only For OS Giken Clutch Kit

T#:54388400

Part#: MN023-AJ60K

Ships in 5 Business Days

$ 150.00 USD

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$ 150.00 USD

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Throw out bearing for OS Giken clutches

OS Giken Clutch Kit - Grand Touring Series - Mini R5X

T#:23383349

Part#: MN023-AQ6

Ships in 3 Business Days

$ 1,680.00 USD

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$ 1,680.00 USD

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Introducing the Mini Grand Touring Clutch, a revolutionary addition to the clutch lineup. This clutch incorporates cutting-edge technology from our Racing Multi-plate Clutches, enhanced further by our exclusive "floating pressure system." Say goodbye to rough and noisy drives - experience a seamless and chatter-free driving sensation. The Mini Grand Touring Clutch is offered in both single and twin plate configurations, with options for soft or hard clutch covers to cater to various engine outputs. Achieve a maximum torque of 315 FT/LBS with this innovative clutch.

Incorporates advanced "floating pressure system" for a smooth driving experience
Retains technology from Racing Multi-plate Clutches
Available in single and twin plate configurations
Options for soft or hard clutch covers to suit engine output

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LSD Tune For OS Giken Differential

T#:34382134

Part#: LSD-TUNE

Ships in 2 Business Days

$ 150.00 USD

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$ 150.00 USD

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OS Giken Clutch Kit - STR Series - R52, R53

T#:54388380

Part#: MN021-BJ5

Ships in 2 Business Days

$ 1,920.00 USD

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$ 1,920.00 USD

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Upgrade your drivetrain and experience the perfect balance of track performance and street drivability.

Transmission Oil Cooler Regulator Valve

T#:302929

Part#: 17211437772-987

Ships on Dec 22, 2026

Sale - Save 4% $ 121.99

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

$ 117.52 USD

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Sale - Save 4%

$ 121.99

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

$ 117.52 USD

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OS Giken Clutch Kit - STR Series - R55 to R61

T#:22756718

Part#: MN023-AJ6

Back Ordered

$ 1,490.00 USD

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$ 1,490.00 USD

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Upgrade Your Clutch for Spirited Driving with STR Clutch

Elevate your driving experience with the STR Clutch, perfect for those who enjoy spirited driving and require a balance between street and occasional race performance. While it may differ from a Factory Dual Mass Clutch, the STR Clutch comes in single and twin plate configurations, paired with a unique clutch cover to maintain a factory clutch pedal feel. This ensures a race-ready clutch that's also easy to handle in everyday driving situations.

Key Features:

Available in single and twin plate configurations
Unique clutch cover for a factory-like pedal feel
Suitable for spirited driving and occasional racing
Dampened Single Plate with Soft Diaphragm
Release Assembly included
Maximum capacity: 285 FT/LBS TORQUE

Upgrade your clutch and enjoy the performance and versatility of the STR Clutch.

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Sub-Categories

N54/N55 BMW Automatic Transmission Cooler - E9X 335

Burger Motorsports Differential Support Bracket Brace - F-Chassis BMW...

BMW E9X 335i BMS Differential Support Bracket Brace - Small Case ...

BMW E9X 335i BMS Differential Support Bracket Brace - Small Case

Benefits:

BMS Differential Support Bracket Brace - BMW 135i / E9x 335i - Large ...

MINI R53/R56 OS Giken Super Lock Racing Limited Slip Differential ...

Fall-Line Motorsports - Aluminum DCT Hydraulics Cover - Multiple BMW ...

Turner Motorsport Shifter Rebuild & Upgrade Kit - F8X M2 M3 M4 (up to...

E46 M3, E9X M3, E34 M5, E39 M5, Z4 M OS Giken Super Lock Limited Slip...

OS Giken E9X M3 Clutch Overhaul Kit (for Grand Am Legal Racing Flywhe...

OS Giken E9X M3 Clutch Alignment and Installation Tool

E9X M3 OS Giken High Performance Racing Clutch & Flywheel Kit ...

Fall-Line Motorsports - Ultimate DCT Track Package - Multiple BMW Fit...

MINI R Chassis OS Giken Clutch Kit - STR Series

Fall-Line Motorsports - Aluminum DCT Oil Pan - Multiple BMW Fitments ...

OS Giken Throw Out Bearing Only For OS Giken Clutch Kit

OS Giken Clutch Kit - Grand Touring Series - Mini R5X

LSD Tune For OS Giken Differential

OS Giken Clutch Kit - STR Series - R52, R53

Transmission Oil Cooler Regulator Valve

OS Giken Clutch Kit - STR Series - R55 to R61

Upgrade Your Clutch for Spirited Driving with STR Clutch

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