BMW Differential and Gearing Upgrades

URO Speedometer Impulse Sender E24, E30, Z3, Z1

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:37993402

Part#: 62168355008

In Stock

$ 46.99 USD

Add to Wish List

Qty

$ 46.99 USD

Add to Wish List

This electronic sensor generates electrical pulses based on the final drive. These signals are then processed by the vehicle’s ECU or speedometer gauge to display real-time speed readings on the dashboard.

Show More Show Less

Rear Differential Mounts - OEM/Meyle HD Rubber - E46, X3, Z4 ...

T#:339943

Part#: E46-MY-DIFF

In Stock

$ 88.99

This product was last offered at the strikethrough price on
02-26-2026

Starting at $ 56.99 USD

Add to Wish List

Starting at $ 56.99 USD

Add to Wish List

These rubber bushings from Meyle are a direct replacement for the stock differential bushings in the E46 3-series, E83 X3 SAV, and Z4 Roadster. If your original bushings are worn (likely around 100,000 miles) these are a great replacement upgrade. The front bushings are the stock OEM type rubber bushings. The rear bushing is a Meyle HD upgrade over stock - about 15% stiffer than the originals. This means the bushing will not flex and twist as much. This puts more power to the wheels since power is no longer used up for 'torquing' the bushing. These are not race bushings; the rubber material is perfectly suitable for street use.

The non-M E46/E83/Z4 models use three differential mounts - two front bushings in the subframe and one rear mount in the diff cover. This set of bushings covers all three. You can opt to include new mounting hardware in the Options list below.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Roadster

Show More Show Less

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

T#:637547

Part#: BMS-DSBB-F

Back Ordered

Starting at $ 129.00 USD

Add to Wish List

Starting at $ 129.00 USD

Add to Wish List

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.

Show More Show Less

URO Differential Cover for E46 M3

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:37993429

Part#: 33112282482

In Stock

$ 241.99 USD

Add to Wish List

Qty

$ 241.99 USD

Add to Wish List

Differential bushing failure is a common weak point of the E46 M3. Bushings are not sold separately, you will need the whole rear cover.

URO Rear Differential Mount - BMW E24 E28

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:639176

Part#: 33171129784

In Stock

$ 37.41 USD

Add to Wish List

Qty

$ 37.41 USD

Add to Wish List

This mount connects to the rear differential cover and secures the rear differential to the subframe.

Premium Differential Service Kit - E46 M3, E9X M3, E82 1 M Coupe ...

Includes BMW SAF-XJ limited slip differential fluid with FM booster

T#:598688

Part#: E46M3DIFSERTMSKT

In Stock

Sale - Save 8% $ 301.99

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

$ 277.83 USD

Add to Wish List

Qty

Sale - Save 8%

$ 301.99

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

$ 277.83 USD

Add to Wish List

Servicing your differential is an important job and should only be completed using high quality components! To ensure our customers are getting exactly what they need, we have put together this limited-slip differential service kit that includes all new fluid from BMW, a new BMW drain plug, and one of our new Titanium Magnetic Differential Drain Plugs!

Show More Show Less

BMS Differential Support Bracket Brace For G Chassis BMW/Supra ...

T#:49822560

Part#: BMSDSBBG

Ships on Aug 28, 2026

$ 229.00 USD

Add to Wish List

Qty

$ 229.00 USD

Add to Wish List

For G-Chassis BMW & A90/A91 Toyota Supra High torque loads, hard launches, and aggressive driving expose the factory differential mounting’s built-in compliance. Under power, the differential can shift excessively, resulting in wheel hop, inconsistent traction, and increased stress on drivetrain components—issues that become more pronounced on tuned or track-driven cars. The BMS Differential Support Bracket Brace corrects this weakness by reinforcing the differential mounting point and securely tying it to the subframe. By controlling unwanted movement, the brace improves rear-end stability and ensures power is transferred to the ground more efficiently. Why Upgrade? OEM differential mounts favor NVH reduction over control. As torque output increases, that compliance translates into drivetrain shock and lost traction. This brace stiffens the system where it matters most, reducing flex and improving load management under acceleration. Performance Benefits Improved launch consistency Significant reduction in wheel hop Increased rear-end stability under load More precise and predictable power delivery Engineered for Demanding Use Designed around factory mounting points, the BMS Differential Support Bracket delivers precise OE-level fitment with increased structural rigidity. Its robust construction resists deflection under high torque, while upgraded hardware provides greater clamping force for long-term reliability. Fully bolt-on for straightforward installation on both stock and modified vehicles. Key Features Reinforces rear differential mounting Limits differential movement under load Enhances traction and drivetrain response Heavy-duty construction for high-performance applications Bolt-on installation using factory locations Compatible with G-chassis BMW and A90/A91 Supra A focused drivetrain upgrade for drivers who demand consistency, control, and durability at higher performance levels.

Show More Show Less

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

T#:1316771

Part#: E9XDIFFBRACE-LG

Ships in 1 Business Day

$ 99.00 USD

Add to Wish List

Qty

$ 99.00 USD

Add to Wish List

Rear Differential Service Kit for various BMW Models

T#:42133544

Part#: 835225790TKT

In Stock

Sale - Save 2% $ 60.99

This product was last offered at the strikethrough price on
08-04-2026

$ 59.72 USD

Add to Wish List

Qty

Sale - Save 2%

$ 60.99

This product was last offered at the strikethrough price on
08-04-2026

$ 59.72 USD

Add to Wish List

The kit includes 2 Quarts of Red line 75w90 - 57904 and brand new Rein rear diff oil drain plug M22x1.5

Differential Bushing - Priced Each

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:641882

Part#: 33171134871

Ships in 1 Business Day

$ 27.99 USD

Add to Wish List

Qty

$ 27.99 USD

Add to Wish List

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

T#:200230

Part#: MN024-HA

In Stock

$ 1,650.00 USD

Add to Wish List

Qty

$ 1,650.00 USD

Add to Wish List

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)

Show More Show Less

Differential Service Kit

T#:15710761

Part#: 33117525064-KT

In Stock

Sale - Save 2% $ 100.76

This product was last offered at the strikethrough price on
06-15-2026

$ 98.71 USD

Add to Wish List

Qty

Sale - Save 2%

$ 100.76

This product was last offered at the strikethrough price on
06-15-2026

$ 98.71 USD

Add to Wish List

Often overlooked, scheduled rear differential service is very important. Over time gear lube breaks down causing bearings and internal components fail. Regular maintenance will keep your vehicle running properly for years to come. Kit includes 3 Bottles of Castrol SAF-XJ 75w140 2 Drain plugs

Show More Show Less

Genuine BMW M Performance Limited Slip 2.81 Differential - F22/23 F3X...

T#:402424

Part#: 33108659989

In Stock

2% off MSRP $ 3,370.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 3,310.99 USD

Add to Wish List

Qty

2% off MSRP

$ 3,370.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 3,310.99 USD

Add to Wish List

Ensure your getting all the power you can to the road with this LSD from BMW Performance

URO Speedometer Sensor

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:35863158

Part#: 62161369906

Ships in 1 Business Day

$ 70.99 USD

Add to Wish List

Qty

$ 70.99 USD

Add to Wish List

BMW URO speedometer / pulse generator is mounted in the back of the differential and provides wheel speed information to the instrument cluster speedometer.

This item fits the following BMWs:
1984-1987 E30 BMW 318i 325e 325es 325i 325ic 325is
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1983-6/1987 E24 BMW 633csi 635csi M6
1981-1987 E23 BMW 733i 735i

Show More Show Less

Differential And LSD Tune

T#:34382136

Part#: BM237HAKT

Ships in 2 Business Days

$ 2,100.00 USD

Add to Wish List

Qty

$ 2,100.00 USD

Add to Wish List

Upgrade to a better performing LSD, includes tune.

Rear Differential Bushing - Priced Each

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:385088

Part#: 33171090950

Ships in 1 Business Day

$ 50.99 USD

Add to Wish List

Qty

$ 50.99 USD

Add to Wish List

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

Add to Wish List

Qty

$ 1,950.00 USD

Add to Wish List

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

Show More Show Less

Rear Differential Mounts - OEM Rubber - E82, E9X

T#:386282

Part#: E9X-DIFF-MOUNTS

Ships in 1 day

$ 193.25 USD

Add to Wish List

Qty

$ 193.25 USD

Add to Wish List

This package of OEM E82 E90 E92 diff mounts replaces the stock rubber diff bushings. On a tuned 335i you may have noticed more driveline shudder or problems hooking up during hard launches. What happens is the stock rubber bushings are under constant flex as engine torque is transmitted through the differential. Under normal driving with a stock car the bushings are rarely stressed. But factor in significant additional torque from a tuned N54/N55 and the stock rubber will quickly show its weaknesses. You may have even broken a diff bolt or two as the heavy differential shifts around. Even non-turbo E82 and E9X models may benefit from fresh bushings.

This is a set of stock rubber bushings, made by OEM supplier Lemforder. They are the same as the Genuine BMW E9X diff mount bushings, but without the more expensive branding. If you're turned off by potential side effects of urethane or Delrin then the OEM diff mounts are your best option. The OEM mounts fit and perform just like the originals so there is no second guessing their quality. If you're looking for an upgrade we offer E9X solid Delrin and aluminum diff mounts that work well, even in street applications.

E9X Diff Mount Set includes:

33176760287 x 2, front differential mount
33176770866 x 1, rear differential mount
(new hardware is optional and can be ordered separately below)

This item fits the following BMWs:
2008-2012 E82 BMW 128i 135i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive - Coupe
2007-2013 E93 BMW 328i 335i - Convertible

Show More Show Less

M Performance Limited Slip Differential Kit - 2.81 - F22/23 F3X M240i...

T#:25805756

Part#: 33108659989KTKT

Ships in 1 day

$ 3,366.99 USD

Add to Wish List

Qty

$ 3,366.99 USD

Add to Wish List

Looking to upgrade your stock differential to the BMW M Performance differential? This kit includes the M Performance limited slip diff plus all the hardware necessary to install the diff in your BMW! What exactly does an LSD do you ask? Well, without an LSD your car is effectively only 1 wheel drive, in that it can't supply torque to both wheels at the same time and will only supply torque to the wheel with less grip, which is what the shortfall is to an open differential (what most vehicles have). An LSD only lets the wheels spin at different speeds by a limited amount, which is typically a percentage difference, which is when the differential locks and both wheels get power. This is not how locked differentials work such as in off-road trucks which supply equal torque and rotational speed to both rear wheels at the same time, which can cause issues with handling.

Show More Show Less

E46 Finned Differential Cover Upgrade Kit

T#:401688

Part#: 33117512980KT

Ships in 1 day

$ 367.99 USD

Add to Wish List

Qty

$ 367.99 USD

Add to Wish List

The perfect upgrade for any E46, this finned differential cover increases cooling to the rear differential to prevent over heating and possible damage. This is a complete kit including fluid and drain plugs.

Includes the following

Aluminum finned differential cover
Drain & fill plug with sealing o-ring
2 Quarts of Redline 75w90

Show More Show Less

Genuine BMW M Performance BMW M Performance Limited-Slip Differential...

T#:222981

Part#: 33108659987

Ships in 1 day

8% off MSRP $ 3,370.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 3,100.35 USD

Add to Wish List

Qty

8% off MSRP

$ 3,370.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 3,100.35 USD

Add to Wish List

For the ultimate in track day performance, the M Performance Limited Slip Differential is here! The clutch-type mechanical differential features a 30% lockup on acceleration and 9% lockup on deceleration. The differential works with the existing DSC system to provide excellent traction wet or dry. It uses the stock 3.08 final drive ratio that the stock M235i uses, so fuel economy will not be affected. This item fits the following BMWs:
2014+ F22 BMW 228i M235i

Show More Show Less

ECS & Turner Performance Drivetrain Bushing Package - E82/88 E9X N52 ...

T#:24344778

Part#: ECSTMSPDBKT

In Stock

Sale - Save 8% $ 1,190.99

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

$ 1,096.14 USD

Add to Wish List

Qty

Sale - Save 8%

$ 1,190.99

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

$ 1,096.14 USD

Add to Wish List

Turner recommends running drivetrain mounts of all the same variety - if you are using poly engine mounts, you should also use poly transmission mounts. This kit is your solution to make sure all components of your vehicle are working with each other to achieve the performance you're looking for. Polyurethane material is more resistant to water, ozone, and chemicals, maintaining its resiliency and elasticity longer than conventional rubber. Keep your vehicle planted for spirited driving while having crisper throttle response and reduce drivetrain movement along with wheel hop. Kit includes: Turner Engine Mount Set - 60A Polyurethane ECS Transmission Mount Set - Street 70A Polyurethane ECS Differential Bushing Set - 95A Polyurethane ECS Subframe Mount Set - 95A - Polyurethane

Show More Show Less

Performance Differential Cover install kit

T#:556968

Part#: 33112282482KT3

Ships on Aug 28, 2026

Sale - Save 7% $ 676.14

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

$ 627.61 USD

Add to Wish List

Qty

Sale - Save 7%

$ 676.14

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

$ 627.61 USD

Add to Wish List

This kit includes Turner Motorsport solid aluminum differential race mounts pre installed in the differential cover for a quick install. These mounts where developed by Turner Motorsport for their Grand-Am Cup E46 M3 race cars, the advantages of solid aluminum mounts is increased suspension & drivetrain response, less drivetrain loss resulting in more wheel horsepower, and longevity - they effectively last forever. These CNC-machined mounts are a direct replacement for the stock rubber pieces, and have been lightened to remove excess weight.

Show More Show Less

URO Differential Output Shaft Seal W/ Lock Ring - BMW E36 E46 E53 E60...

2X Entries For Our G87 M2 Sweepstakes!

T#:43750219

Part#: 33107505604

In Stock

$ 10.00 USD

Add to Wish List

Qty

$ 10.00 USD

Add to Wish List

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.

Show More Show Less

Differential Input Shaft Seal - Priced Each

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

Add to Wish List

Qty

$ 18.99

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

$ 15.99 USD

Limited Qty Sale

Add to Wish List

Replaces cracked or hardened valve body seals

Front and Rear Differential Service Kit - F3x

T#:56327180

Part#: F3XAWDFDKT5

In Stock

Sale - Save 1% $ 104.99

This product was last offered at the strikethrough price on
08-04-2026

$ 103.54 USD

Add to Wish List

Qty

Sale - Save 1%

$ 104.99

This product was last offered at the strikethrough price on
08-04-2026

$ 103.54 USD

Add to Wish List

This kit combines Red Line 75W85 GL-5 Synthetic Gear Oil with Rein OEM replacement plugs in order to perform a full drain and fill service on both of your differentials

Differential Service Kit

T#:15744025

Part#: 331175250640-KT

In Stock

Sale - Save 8% $ 274.99

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

$ 252.18 USD

Add to Wish List

Qty

Sale - Save 8%

$ 274.99

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

$ 252.18 USD

Add to Wish List

Often overlooked, scheduled rear differential service is very important. Over time gear lube breaks down causing bearings and internal components fail. Regular maintenance will keep your vehicle running properly for years to come. Three bottle of Genuine BMW Limited Slip Gear Lube 1 New Genuine BMW Drain/Fill plugs 1 ECS Magnetic Differential Oil Drain Plug Drain plug O-ring

Show More Show Less

Complete Performance Polyurethane Differential And Subframe Bushing S...

T#:56038061

Part#: E9XSBFRDFFBKT2

In Stock

$ 491.99 USD

Add to Wish List

Qty

$ 491.99 USD

Add to Wish List

This complete upgrade package is designed to put an end to steering slop. Utilizing a high performance 95A durometer polyurethane formulation, this kit replaces the mushy OEM rubber with proven rigidity.

Show More Show Less

Front and Rear Differential Service Kit - F3x

T#:56327200

Part#: F3XAWDFDKT6

Ships in 1 Business Day

$ 154.99

This product was last offered at the strikethrough price on
08-07-2026

$ 154.52 USD

Add to Wish List

Qty

$ 154.52 USD

Add to Wish List

This kit combines Motul 75W85 GL-5 Synthetic Gear Oil with Rein OEM replacement plugs in order to perform a full drain and fill service on both of your differentials

Complete Xdrive Differential And Transfer Case Service Kit - E90, E91...

T#:42099854

Part#: 07512293972T3KT

Ships in 1-3 days

Sale - Save 13% $ 303.99

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

$ 264.15 USD

Add to Wish List

Qty

Sale - Save 13%

$ 303.99

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

$ 264.15 USD

Add to Wish List

Maintain smooth power distribution, protect your drivetrain, and extend the life of your BMW xDrive system with the Complete Xdrive Differential And Transfer Case Service Kit - E90, E91, E92, E60, E61, E70.

Show More Show Less

OS Giken Superlock Limited Slip Differential Unit - E82 135i, E9X 335...

T#:338590

Part#: BM531-HA

Ships in 2 Business Days

Starting at $ 3,700.00 USD

Add to Wish List

Starting at $ 3,700.00 USD

Add to Wish List

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

Show More Show Less

OS Giken TractionControl Limited Slip Differential Unit - E82 135i, E...

T#:338591

Part#: BM531-HC

Ships in 2 Business Days

Starting at $ 2,550.00 USD

Add to Wish List

Starting at $ 2,550.00 USD

Add to Wish List

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 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

Show More Show Less

Rogue Engineering E46 M3 Differential Bushing (Front Position) FIX ...

T#:54388516

Part#: RE.484.FIX

Ships in 8 Business Days

$ 64.00 USD

Add to Wish List

Qty

$ 64.00 USD

Add to Wish List

A common failure point on the BMW E46 M3 platform occurs when the side differential mounting bolt backs out, leading to stripped threads in the differential cover.

LSD Tune For OS Giken Differential

T#:34382134

Part#: LSD-TUNE

Ships in 2 Business Days

$ 150.00 USD

Add to Wish List

Qty

$ 150.00 USD

Add to Wish List

Genuine BMW Transfer Case Repair Kit - E53

T#:56471654

Part#: 27102413711KT2

Ships in 4 Business Days

$ 228.99 USD

Add to Wish List

Qty

$ 228.99 USD

Add to Wish List

This Transfer Case Repair Kit provides an exact-fit, OEM grade solution engineered to rebuild the servomotor assembly back to factory operating specifications. Designed for enthusiasts who demand crisp power transfer and exact mechanical feedback from their drivetrain.

Show More Show Less

Genuine BMW Transfer Case Repair Kit - E70/E71

T#:56471655

Part#: 27102413711KT3

Ships in 4 Business Days

$ 228.99 USD

Add to Wish List

Qty

$ 228.99 USD

Add to Wish List

This Transfer Case Repair Kit provides an exact-fit, OEM grade solution engineered to rebuild the servomotor assembly back to factory operating specifications. Designed for enthusiasts who demand crisp power transfer and exact mechanical feedback from their drivetrain.

Show More Show Less

Genuine BMW Transfer Case Repair Kit - E83

T#:56471657

Part#: 27102413711KT4

Ships in 4 Business Days

$ 228.99 USD

Add to Wish List

Qty

$ 228.99 USD

Add to Wish List

This Transfer Case Repair Kit provides an exact-fit, OEM grade solution engineered to rebuild the servomotor assembly back to factory operating specifications. Designed for enthusiasts who demand crisp power transfer and exact mechanical feedback from their drivetrain.

Show More Show Less

Genuine BMW Transfer Case Repair Kit - E90

T#:56471658

Part#: 27102413711KT5

Ships in 4 Business Days

$ 228.99 USD

Add to Wish List

Qty

$ 228.99 USD

Add to Wish List

This Transfer Case Repair Kit provides an exact-fit, OEM grade solution engineered to rebuild the servomotor assembly back to factory operating specifications. Designed for enthusiasts who demand crisp power transfer and exact mechanical feedback from their drivetrain.

Show More Show Less

BMW M Performance Limited-Slip Differential With Solid Delrin Mounts ...

T#:55353632

Part#: 33108659987KT2

Ships in 1 day

$ 3,481.99 USD

Add to Wish List

Qty

$ 3,481.99 USD

Add to Wish List

Under hard acceleration, that stock rear diff twists, flexes, and deflects. Robbing your car of power

Pre-XDrive Transfer Case Service Kit - E53

T#:56616382

Part#: 27111226467KT3

Ships in 5 Business Days

$ 48.99 USD

Add to Wish List

Qty

$ 48.99 USD

Add to Wish List

This Transfer Case Service Kit replaces degraded fluid and sealing hardware to maintain proper lubrication within the all wheel drive transfer case. Unserviced transfer case fluid breaks down into sludge and deposits, causing lubrication loss and internal component wear; this service kit prevents internal wear by renewing fluid properties and drain hardware.

Show More Show Less

Pre-XDrive Transfer Case Service Kit - E46

T#:56616376

Part#: 27111226467KT2

Ships in 5 Business Days

$ 48.99 USD

Add to Wish List

Qty

$ 48.99 USD

Add to Wish List

This Transfer Case Service Kit replaces degraded fluid and sealing hardware to maintain proper lubrication within the all wheel drive transfer case. Unserviced transfer case fluid breaks down into sludge and deposits, causing lubrication loss and internal component wear; this service kit prevents internal wear by renewing fluid properties and drain hardware.

Show More Show Less

Limited Slip Differential With Output Shaft Seal - 188 (Small Diff Ho...

T#:55965861

Part#: 30309175WKWVTKT2

Ships in 10 Business Days

$ 1,269.99 USD

Add to Wish List

Qty

$ 1,269.99 USD

Add to Wish List

This AutoTech LSD Upgrade Kit pairs AutoTech’s highly engineered 188mm limited-slip differential carrier with a pair of Corteco output shaft seals, giving you everything you need for a leak-free install.

Show More Show Less