BMW Drivetrain Parts for BMW 3 Series E93 (2007-2013)

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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 Clutch - Corporate Logo
T#:24677044
Part#: K7052602HDOKT1
Ships in 1 Business Day
$ 859.99 USD
Free Shipping on orders $49 and up
Enhance your BMW's performance with this Stage 2 Daily Clutch Kit featuring a Heavy Duty Pressure Plate. Engineered for HP modifications, this clutch system offers increased clamp load without adding excessive pedal pressure. The Organic disc material with high metal content significantly boosts friction coefficient, doubling it compared to stock linings, and elevates rotational strength up to a 12,000 RPM burst point. Despite its robustness, this clutch system maintains a stock feel while ensuring durability and strength.
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South Bend Clutch - Corporate Logo
T#:28138123
Part#: K70558HDOCE
Ships in 1 Business Day
$ 753.99 USD
Free Shipping on orders $49 and up

An SFI approved single mass flywheel is recommended for this application to get optimal performance. This clutch system is designed for the racing climate. The pressure plate is precision balance for vibration free operation at high RPM. The pressure plate fulcrum is altered for a positive disengagement and a quick shift. The disc is engineered with a Dual Damped design to provide accurate control when accelerating through corners. The friction material is a hybrid using a full face Feramic (Sintered Iron) lining on the flywheel side and a high metal content Organic lining on the pressure plate side. Engagement is positive yet buffered due to the high graphite content unique to Feramic facings.

Stage 2 Endurance Clutch Kits:

Recommended uses are daily and street with an emphasis on Rally and Endurance racing.

Rated to hold 495lbs/ft of torque.

Featuring a solid-hub center section for use with an OE dual-mass flywheel

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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.

South Bend Clutch Stage 3 Daily Driver Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:14585010
Part#: K70526-02-SS-O-S
Ships in 1 Business Day
$ 1,074.99 USD
Free Shipping on orders $49 and up
South Bend Clutch Stage 3 Daily Driver clutch kits are recommended for a single mass flywheel (SMF), when the original design is a dual mass flywheel (DMF). These clutch packages are designed for high-horsepower vehicles desiring a start performance similar to OE. The pressure plate is race-engineered (SS) and SFI-approved with a significant load increase over stage 1 and 2 pressure plates (+600-800 lbs.). Expect a pedal effort increase of 20 to 25 percent. Discs are assembled with heat-treated wear-resistant hubs, as well as drive plates and springs for high-load transfer and dependable operation. The sprung centers on the disc, in conjunction with the marcel fin between the linings, creating a dual dampening effect that simulates OE start performance. A performance organic friction material with a high metal content increases torque and rpm capability—and maintains low operating temperatures, which reduce wear and glazing. South Bend Clutch Stage 3 Daily Driver clutch kits are the perfect match for your high-performance street machine and occasional track use.
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South Bend Clutch - Corporate Logo
T#:14551943
Part#: K70605-HD-O
Ships in 3 Business Days
$ 1,218.99 USD
Free Shipping on orders $49 and up
Engineered for HP modifications. This Heavy Duty Pressure Plate has an increased clamp load with little or no increase in pedal pressure. The Organic disc material has a high metal content that increases the co-efficient of friction by two times over a stock lining and increases rotational strength up to a 12,000 RPM burst point. This clutch system maintains a stock feel while offering strength and durability. Designed to be used with the stock flywheel.
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OS Giken - Corporate Logo
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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OS Giken - Corporate Logo
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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South Bend Clutch K70526-02-SS-DXD-B-SMF
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:14585007
Part#: K70526-02-SS-DXD
Ships in 1 Business Day
$ 1,302.99 USD
Free Shipping on orders $49 and up
Drag racing requires a Single Mass Steel Flywheel to be included with each kit when the original design is Dual Mass Flywheel. This clutch package is built to handle heavily modified cars and is designed to function according to the specific needs of the 1/4 and 1/8 mile track. The pressure plate for this kit is SFI approved Race Cover engineered to disengage with less pedal travel shortening the shift time. Discs are a puck design, which reduces rotational mass, and are assembled with all high-carbon component pieces for maximum strength. The friction material used is Graphite impregnated Ceramic perfectly suited for drag racing because of its maximum friction coefficient, rapid heat dissipation and abrupt engagement characteristics. Recommended uses drag, pulling, and drifting.
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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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South Bend Clutch - Corporate Logo
T#:366987
Part#: K03099SSO
Ships in 1 Business Day
$ 1,074.99 USD
Free Shipping
$ 1,074.99 USD
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This clutch package is designed for high HP vehicles desiring a start performance similar to O.E. The pressure plate is Race Engineered (SS) and SFI approved with significant load increase over stage 1,2 pressure plates (+600-800 lbs.). Expect a pedal effort increase of 20%-25%. Discs are assembled with heat-treated wear resistant hubs; drive plates and springs for high load transfer and dependable operation. The sprung centers on the disc in conjunction with the marcel fin between the linings create a dual dampening effect that simulates O.E. start performance. A Performance Organic friction material with a high metal content increases torque and RPM capability and maintains low operating temperatures which reduces wear and glazing.

Stage 3 Daily Clutch Kits:

Recommended usages are daily, spirited street and occasional track
Conservatively rated to hold 500lbs/ft of torque
Featuring a solid-hub center section for use with an OE dual-mass flywheel

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OS Giken - Corporate Logo
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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South Bend Clutch Stage 3 Endurance Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:14585012
Part#: K70526-02-SS-TZ-
Ships in 1 Business Day
$ 1,171.99 USD
Free Shipping on orders $49 and up
Engineered for HP modifications. This Heavy Duty Pressure Plate has an increased clamp load with little or no increase in pedal pressure. The Organic disc material has a high metal content that increases the coefficient of friction by two times over a stock lining and increases rotational strength up to a 12,000 RPM burst point. This clutch system maintains a stock feel while offering strength and durability.​ Stage 3 Endurance Clutch Kits: Recommended uses are daily and street with an emphasis on Rally and Endurance racing. Rated to hold 540lbs/ft of torque. Featuring a solid-hub center section for use with an aftermarket Single Mass Flywheel
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Stage 3 Endurance Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:366990
Part#: K03099SSTZ
Ships in 1 Business Day
$ 1,171.99 USD
Free Shipping
$ 1,171.99 USD
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The disc is designed for the special needs of a vehicle with circuit racing in mind. Kevlar friction material is used for its unique static to dynamic ratios of friction co-efficients at high energy levels. This translates to a perfect transition from one gear to the next. Discs are assembled with only performance components and equipped with torsion springs functioning as a damper between engine and gearbox. This kit uses the same Race Engineered SFI approved pressure plate as stage 3 daily package. Race engineered pressure plates deliver more transmittable torque and stability, longer life and superior thermal resistance. They also deliver noticeably better dynamics through higher clamp load when driving the vehicle to its limits. Stage 3 Endurance Clutch Kits: Recommend usages are Rally, endurance race, clubsport, autocross, street and daily Conservatively rated to hold 540lbs/ft of torque. Featuring a solid-hub center section for use with an OE dual-mass flywheel
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South Bend Clutch Stage 4 X-Series Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:14585013
Part#: K70526-02-SS-X-S
Ships in 1 Business Day
$ 1,367.99 USD
$ 1,367.99 USD
South Bend Clutch Stage 4 X-Series clutch kits are build-to-order clutch packages for vehicles modified to exceed Stage 3 hp parameters. The kits include a steel, single mass, SFI-approved flywheel for safety. The race-engineered pressure plate is modified for maximum plate load, and helps to deliver more transmittable torque, stability, extended life, and superior thermal resistance. The South Bend Clutch Stage 4 X-Series clutch kits provide noticeably better dynamics through higher clamp loads, when driving your vehicle to its limits. Order the Stage 4 X-Series clutch kit recommended for your specific vehicle and engine size. Features, items, and specs include: * Puck-style disc offered in sprung and un-sprung options * Graphite-impregnated ceramic or sintered iron friction material options * Torque ratings calculated at time of ordering * Engagement characteristics can be abrupt * Meticulous processing and advanced packaging materials
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Stage 2 Endurance Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:25075808
Part#: K7052602HDOCE
Ships in 1 Business Day
$ 948.99 USD
Free Shipping on orders $49 and up
Engineered for HP modifications. This Heavy Duty Pressure Plate has an increased clamp load with little or no increase in pedal pressure. The Organic disc material has a high metal content that increases the coefficient of friction by two times over a stock lining and increases rotational strength up to a 12,000 RPM burst point. This clutch system maintains a stock feel while offering strength and durability.​ Stage 2 Endurance Clutch Kits: Recommended uses are daily and street with an emphasis on Rally and Endurance racing. Rated to hold 450lbs/ft of torque. Featuring a solid-hub center section for use with an OE dual-mass flywheel
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South Bend Clutch - Corporate Logo
T#:25075810
Part#: K70526-02-HD-DXD
Ships in 1 Business Day
$ 1,171.99 USD
$ 1,171.99 USD
Engineered for HP modifications. This Heavy Duty Pressure Plate has an increased clamp load with little or no increase in pedal pressure. The Organic disc material has a high metal content that increases the coefficient of friction by two times over a stock lining and increases rotational strength up to a 12,000 RPM burst point. This clutch system maintains a stock feel while offering strength and durability.​ Stage 2 Drag Clutch Kits: Recommended for use on the track with an emphasis on Drag racing. Rated to hold 520lbs/ft of torque. Featuring a solid-hub center section for use with an OE dual-mass flywheel
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Stage 3 Daily Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:25075811
Part#: K7052602SSODMF
Ships in 1 Business Day
$ 1,074.99 USD
Free Shipping on orders $49 and up
Engineered for HP modifications. This Heavy Duty Pressure Plate has an increased clamp load with little or no increase in pedal pressure. The Organic disc material has a high metal content that increases the coefficient of friction by two times over a stock lining and increases rotational strength up to a 12,000 RPM burst point. This clutch system maintains a stock feel while offering strength and durability.​ Stage 3 Daily Clutch Kits: Recommended usage is daily, street, and moderate race Conservatively rated to hold 500 lbs/ft of torque Designed to be used with the stock dual mass flywheel.
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OS Giken - Corporate Logo
T#:338590
Part#: BM531-HA
Ships in 2 Business Days
Starting at $ 3,700.00 USD
Starting at $ 3,700.00 USD
video: E92 335i with limited slip

click for high quality
A turbocharged BMW such as the 135i or 335i needs traction to put that power to the ground. The stock differential of both the 135i and 335i only put power to one wheel -- this just won't cut it! Upgrading to a limited slip differential means power to BOTH wheels, for better lauch, acceleration, and track handling. We're excited to be carrying the OS Giken LSD unit in our performance catalog, as we've used their products on our own Championship winning E46 and E92 race cars.

With the 135i/335i LSD unit, they have incorporated revolutionary new ideas into the design (4 years in the making!) which 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!). Zero break-in required. Super smooth and quiet engagement, and 100% progressive locking capability.

Installation note: BMW differentials use many unique and BMW-only parts and components. Only technicians who are experienced and familiar with BMW parts should perform the installation. The OS Giken LSD is the limited slip unit (or 'chunk') only. It replaces the stock non-LSD chunk but the original ring and pinion and other internals must be installed with the OS Giken unit. This unit will only work on 335i manual differentials with a bolt-in or modified ring gear. Proper setup and spacing is critical for long life operation. Incorrect installation will void the warranty. We also offer the TCD unit pre-installed - see our performance diff catalog for more info.

The OS Giken Superlock Diff unit fits the following BMWs:
2008-2012 E82 BMW 135i with manual transmission
2007-2011 E90 BMW 335i - Sedan with manual transmission
2007-2013 E92 BMW 335i 335is - Coupe with manual transmission
2007-2013 E93 BMW 335i - Convertible with manual transmission
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South Bend Clutch - Corporate Logo
T#:25075818
Part#: K7052602SSXDMF
Ships in 1 Business Day
$ 1,367.99 USD
$ 1,367.99 USD
South Bend Clutch Stage 4 X-Series clutch kits are build-to-order clutch packages for vehicles modified to exceed Stage 3 hp parameters. This kit is designed for use with the OE dual mass flywheel. The race-engineered pressure plate is modified for maximum plate load, and helps to deliver more transmittable torque, stability, extended life, and superior thermal resistance. The South Bend Clutch Stage 4 X-Series clutch kits provide noticeably better dynamics through higher clamp loads, when driving your vehicle to its limits. Order the Stage 4 X-Series clutch kit recommended for your specific vehicle and engine size. Features, items, and specs include: * Puck-style disc offered in sprung and un-sprung options * Graphite-impregnated ceramic or sintered iron friction material options * Torque ratings calculated at time of ordering * Engagement characteristics can be abrupt * Meticulous processing and advanced packaging materials
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South Bend Clutch Stage 3 Drag Clutch Kit
For Vehicles with production date from 2007
South Bend Clutch - Corporate Logo
T#:25075815
Part#: K7052602SSDXDBDM
Ships in 1 Business Day
$ 1,302.99 USD
Free Shipping on orders $49 and up
This clutch package is built to handle heavily modified cars and is designed to function according to the specific needs of the 1/4 and 1/8 mile track. The pressure plate for this kit is SFI approved Race Cover engineered to disengage with less pedal travel shortening the shift time. Discs are a puck design, which reduces rotational mass, and are assembled with all high-carbon component pieces for maximum strength. The friction material used is Graphite impregnated Ceramic perfectly suited for drag racing because of its maximum friction coefficient, rapid heat dissipation and abrupt engagement characteristics. Recommended uses drag, pulling, and drifting.
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OS Giken - Corporate Logo
T#:338591
Part#: BM531-HC
Ships in 2 Business Days
Starting at $ 2,550.00 USD
Starting at $ 2,550.00 USD
video: E92 335i with limited slip
click for high quality

As Used on Project E92 335i
A turbocharged BMW such as the 135i or 335i needs traction to put that power to the ground. The stock differential of both the 135i and 335i only put power to one wheel -- this just won't cut it! Upgrading to a limited slip differential means power to BOTH wheels, for better launch, acceleration, grip, and track handling. We're excited to be carrying the OS Giken LSD unit in our performance catalog, as we've used their products on our own Championship winning E46 and E92 race cars.

OS Giken's newest innovation is their quietest and smoothest limited slip unit yet - the Traction Control Differential (TCD). TCD is similar to their excellent Superlock differentials but with additional oil channels and pathways. The added lubrication makes diff operation smoother and quieter than before (not that there were many complaints to begin with). The locking engagement is more progressive than before which makes this diff more suitable for street driving. Track cars and drift cars should still use the Superlock LSD as it will transition to lock sooner. TCD is an evolution of a diff that was already extremely well-engineered for road and track use. Not willing to rest on their laurels, they took their superior engineering a step further.

With the 135i/335i LSD unit, they have incorporated revolutionary ideas into the overall limited-slip design which uses an unprecedented number of friction plates (up to 28 total!) for better locking force, better engagement/disengagement, and less generated heat. 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!). Zero break-in required. 100% progressive locking capability. 

Installation note: BMW differentials use many unique and BMW-only parts and components. Only technicians who are experienced and familiar with BMW parts should perform the installation. The OS Giken LSD is the limited slip unit (or 'chunk') only. It replaces the stock non-LSD chunk but the original ring and pinion and other internals must be installed with the OS Giken unit. This unit will only work on 335i manual differentials with a bolt-in or modified ring gear. Proper setup and spacing is critical for long life operation. Incorrect installation will void the warranty. We also offer the TCD unit pre-installed -  see our performance diff catalog for more info.

The OS Giken TCD Diff unit fits the following BMWs:
2008-2012  E82 BMW   135i with manual transmission
2007-2011  E90 BMW   335i - Sedan with manual transmission
2007-2013  E92 BMW   335i 335is - Coupe with manual transmission
2007-2013  E93 BMW   335i - Convertible with manual transmission
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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