Find Parts That Fit Your Vehicle

BMW Differential and Gearing Upgrades

Upgrading various parts of the differential can have tremendous benefits in your car's performance. It's easy to forget that the differential is a source for making your car faster and handle better so it's often overlooked. The engine is not the only place to make the car faster. Our differential options vary from gearing upgrades to limited slip conversions. You can purchase the ring & pinion gear sets on their own (professional installation required) or have us build a diff around your own specifcations. The options are almost endless! Every custom-built diff is fully rebuilt with seals and bearings. We also design and supply bushing options to reduce driveline wind-up, finned differential covers for better cooling, and more!

Ratio Changes - Changing the differential gearing is one of the best and most-effective upgrades you can make on any BMW (old or new). By using a shorter (numerically higher) final drive ratio you are increasing your RPM relative to road speed - this puts you in a more powerful RPM range than before! Since you're in a 'meatier' part of the power band you're now putting down more power/torque to the ground. If you can trade outright top speed for faster acceleration at daily speeds then this is the perfect upgrade for you.

Limited Slip Upgrades - Sadly, many BMWs today are not equipped with a limited slip (posi-traction) differential. BMW has tried to compensate by using traction control that cuts power at the engine or applies the brakes to retard wheel spin (or a combination of both). But nothing beats the function and feel of a a true LSD which may be why BMW continues to use them in M cars. Our LSD upgrades can be done a number of different ways - a factory-type limited slip unit with either 2 or 3 clutch packs, helical type, OS Giken unit, or something truly custom. We can also vary ramp angles and setup to change the limited-slip behavior under acceleration, deceleration, and cornering. Need a custom diff? Call or e-mail to have a quote.

Sub-Categories

Sort By:

OEM Lemforder Rear Differential Bushing - E39
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Lemforder - Corporate Logo
T#:374279
Part#: 33171093008
In Stock
$ 29.99

This product was last offered at the strikethrough price on
03-10-2026

$ 21.39 USD
Free Shipping on orders $49 and up
$ 21.39 USD
Free Shipping on orders $49 and up

Bushings tends to wear over time and split or even break free from the internal sleeve, causing excessive movement and sloppy control feel. OEM Lemförder bushings are the perfect option to restore suspension back to day 1 quality.

OEM Lemförder is an engineering company that focuses on high-quality, precision manufacturing of critical suspension and steering components. Providing exceptionally high quality parts directly to BMW, as well as 50+ other big name automotive companies, such as Mercedes and Audi, their history of reliability and variety of offered parts makes them one of the biggest names for a go-to OEM parts provider. Lemförder parts place an important emphasis on design, production, and assembly, ensuring maximum reliability. They even coat all parts possible with corrosion protection for extended longevity.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

Show More Show Less
URO Speedometer Impulse Sender E24, E30, Z3, Z1
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37993402
Part#: 62168355008
In Stock
$ 46.99 USD
Free Shipping on orders $49 and up
$ 46.99 USD
Free Shipping on orders $49 and up
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
URO Rear Differential Mount - BMW E24 E28
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:639176
Part#: 33171129784
In Stock
$ 37.41 USD
Free Shipping on orders $49 and up
This mount connects to the rear differential cover and secures the rear differential to the subframe.

URO Differential Cover for E46 M3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37993429
Part#: 33112282482
In Stock
$ 241.99 USD
Free Shipping on orders $49 and up
Differential bushing failure is a common weak point of the E46 M3. Bushings are not sold separately, you will need the whole rear cover.

Differential Bushing - Priced Each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:641882
Part#: 33171134871
Ships in 2 Business Days
$ 27.99 USD
Free Shipping on orders $49 and up
URO Speedometer Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:35863158
Part#: 62161369906
Ships in 2 Business Days
$ 70.99 USD
Free Shipping on orders $49 and up
$ 70.99 USD
Free Shipping on orders $49 and up
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

Rear Differential Bushing - Priced Each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:385088
Part#: 33171090950
Ships in 2 Business Days
$ 50.99 USD
Free Shipping on orders $49 and up
OEM Lemforder Differential Rubber Mounting Rear - 33173449082 - E83,E...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Lemforder - Corporate Logo
T#:398994
Part#: 33173449082
Special Order: No Guaranteed ETA
$ 27.99 USD
Free Shipping on orders $49 and up

Bushings tends to wear over time and split or even break free from the internal sleeve, causing excessive movement and sloppy control feel. OEM Lemförder bushings are the perfect option to restore suspension back to day 1 quality.

OEM Lemförder is an engineering company that focuses on high-quality, precision manufacturing of critical suspension and steering components. Providing exceptionally high quality parts directly to BMW, as well as 50+ other big name automotive companies, such as Mercedes and Audi, their history of reliability and variety of offered parts makes them one of the biggest names for a go-to OEM parts provider. Lemförder parts place an important emphasis on design, production, and assembly, ensuring maximum reliability. They even coat all parts possible with corrosion protection for extended longevity.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMW Chassis:
E83 X3,E85,E86,E89 Z4

Show More Show Less

URO - Corporate Logo
T#:43750219
Part#: 33107505604
In Stock
$ 10.00 USD
Free Shipping on orders $49 and up
$ 10.00 USD
Free Shipping on orders $49 and up
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

URO - Corporate Logo
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
Free Shipping on orders $49 and up
$ 18.99

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

$ 15.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Replaces cracked or hardened valve body seals
Rear Axle Rubber Mounting FRONT 33176770788
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Lemforder - Corporate Logo
T#:15674
Part#: 33176770788
In Stock
$ 17.99

This product was last offered at the strikethrough price on
06-08-2026

$ 12.50 USD
Free Shipping on orders $49 and up
$ 12.50 USD
Free Shipping on orders $49 and up
RUBBER MOUNTING FRONT
OEM Lemforder Front Differential Bushing - E53 X3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Lemforder - Corporate Logo
T#:362574
Part#: 33176770457
Ships in 2 Business Days
$ 16.99

This product was last offered at the strikethrough price on
07-15-2026

$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up

Bushings tends to wear over time and split or even break free from the internal sleeve, causing excessive movement and sloppy control feel. OEM Lemförder bushings are the perfect option to restore suspension back to day 1 quality.

OEM Lemförder is an engineering company that focuses on high-quality, precision manufacturing of critical suspension and steering components. Providing exceptionally high quality parts directly to BMW, as well as 50+ other big name automotive companies, such as Mercedes and Audi, their history of reliability and variety of offered parts makes them one of the biggest names for a go-to OEM parts provider. Lemförder parts place an important emphasis on design, production, and assembly, ensuring maximum reliability. They even coat all parts possible with corrosion protection for extended longevity.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

Show More Show Less


OEM Lemforder Rear Subframe Mount, Rear - 33171090089 - E38, E52 Z8 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Lemforder - Corporate Logo
T#:398339
Part#: 33171090089
Ships on Jan 14, 2027
$ 19.99 USD
Free Shipping on orders $49 and up

Exposure to the elements and stress/pressure can lead to failing and splitting subframe bushings. Ensure your subframe is mounted perfectly steady to prevent vibrations, knocks, suspension issues, and potential damage to the body of the vehicle or suspension components. OEM Lemforder is the perfect replacement to make sure that everything is mounted properly.

OEM Lemförder is an engineering company that focuses on high-quality, precision manufacturing of critical suspension and steering components. Providing exceptionally high quality parts directly to BMW, as well as 50+ other big name automotive companies, such as Mercedes and Audi, their history of reliability and variety of offered parts makes them one of the biggest names for a go-to OEM parts provider. Lemförder parts place an important emphasis on design, production, and assembly, ensuring maximum reliability. They even coat all parts possible with corrosion protection for extended longevity.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMW Chassis:
1995-2001 E38 BMW 740i 740iL 750iL
2000 - 2004 E52 BMW Z8 Roadster, Alpina

Show More Show Less
OEM Lemforder Differential Rubber Mounting Front - 33176760287 - E82,...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Lemforder - Corporate Logo
T#:399012
Part#: 33176760287
Back Ordered
$ 17.16 USD
Free Shipping on orders $49 and up

Bushings tends to wear over time and split or even break free from the internal sleeve, causing excessive movement and sloppy control feel. OEM Lemförder bushings are the perfect option to restore suspension back to day 1 quality.

OEM Lemförder is an engineering company that focuses on high-quality, precision manufacturing of critical suspension and steering components. Providing exceptionally high quality parts directly to BMW, as well as 50+ other big name automotive companies, such as Mercedes and Audi, their history of reliability and variety of offered parts makes them one of the biggest names for a go-to OEM parts provider. Lemförder parts place an important emphasis on design, production, and assembly, ensuring maximum reliability. They even coat all parts possible with corrosion protection for extended longevity.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMW Chassis:
E82,E90,E92,E93

Show More Show Less