Home
Drivetrain
Differential and Gearing Upgrades

BMW Differential and Gearing Upgrades for BMW 1 Series E82 (2008-2013)

Clear BMW chassis

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:

ECS Magnetic Differential Oil Drain Plug - Most BMW & Mini Models ...

T#:366828

Part#: 009314ECS01A

In Stock

Sale - Save 25% $ 62.99

This product was last offered at the strikethrough price on
06-13-2026

$ 47.24 USD

Add to Wish List

Qty

Sale - Save 25%

$ 62.99

This product was last offered at the strikethrough price on
06-13-2026

$ 47.24 USD

Add to Wish List

You use a magnetic drain plug for your engine oil, right? Why not apply the same proactive thinking to the differential too? This is a direct replacement magnetic differential drain plug for your BMW. It will catch and retain fine and larger metal particles in your diff oil. If you're proactive in your diff oil servicing, you will catch a minor issue long before it becomes a headache. Diff drain plug includes one sealing o-ring. Direct replacement for Genuine BMW part number(s): 33117525064, 33110308370, 33110152626

Show More Show Less

Performance Polyurethane Differential Bushing Set - E9X M3

T#:596679

Part#: 026711ECS09

In Stock

Sale - Save 5% $ 177.99

This product was last offered at the strikethrough price on
06-14-2026

$ 169.09 USD

Add to Wish List

Qty

Sale - Save 5%

$ 177.99

This product was last offered at the strikethrough price on
06-14-2026

$ 169.09 USD

Add to Wish List

Upgrade your worn rubber bushings with ECS Tuning's Performance Polyurethane Differential Bushing Set. In-House Engineered to improve power delivery and handling, with a superior service life over the soft factory rubber bushings.

Show More Show Less

ECS Complete Performance Polyurethane Differential Bushing Set - 95A ...

T#:589555

Part#: 026709ECS09

In Stock

Sale - Save 15% $ 183.99

This product was last offered at the strikethrough price on
06-14-2026

$ 156.39 USD

Add to Wish List

Qty

Sale - Save 15%

$ 183.99

This product was last offered at the strikethrough price on
06-14-2026

$ 156.39 USD

Add to Wish List

Upgrade your worn OE rubber bushings with ECS Tuning's Performance Polyurethane Differential Bushing Set. In-House Engineered to improve power delivery and handling, with a superior service life over the soft factory rubber bushings.

Show More Show Less

Open Differential Weld Plates - E8x E9x

T#:35121162

Part#: 056350LA01

Ships on Oct 5, 2026

Sale - Save 25% $ 30.99

This product was last offered at the strikethrough price on
06-14-2026

$ 23.24 USD

Add to Wish List

Qty

Sale - Save 25%

$ 30.99

This product was last offered at the strikethrough price on
06-14-2026

$ 23.24 USD

Add to Wish List

Convert your open differential to a locked differential without the costly expense of an LSD replacement.

Get your car ready for aggressive track driving or drifting without purchasing or replacing your differential. The weld-in plates strengthen your diff and allow both wheels to engage simultaneously giving you a more predictable and capable track car.

An open differential allows the wheels to spin at different speeds and sends power to the wheel with the least amount of traction. This may be a good feature for your regular everyday driver but limits you on the track. The weld-in plates simulate a driving experience similar to a limited-slip differential allowing you to put power to both wheels in a low traction area or initiate drifts.

Features and benefits:

Added strength to your differential gears
Converts from open differential
Fabricated to fit in the spider gears for an easier weld and increased confidence
Made from 7 gauge mild steel, formed to fit

Show More Show Less

RevShift Differential Bushing Set - BMW E9X / E8X - 80A Street ...

For Non-M Models Only

T#:39363088

Part#: DBS-E9X80A-REV

Ships in 3 Business Days

$ 129.99 USD

Add to Wish List

Qty

$ 129.99 USD

Add to Wish List

Differential Bushing Set - BMW E9X / E8X (Non-M) Enhance your driveline performance with this premium differential bushing set, designed specifically for E9X and E8X Non-M models. Factory rubber bushings degrade over time, leading to excessive drivetrain movement, clunking, and inefficient power transfer. These high-quality replacement bushings provide firm, reliable differential support, minimizing deflection for sharper throttle response and improved drivetrain stability. Whether you're replacing worn-out components or upgrading for spirited driving, this set delivers a more connected and controlled feel on the road. Precision-engineered for a direct OE-style fit, these bushings install seamlessly without modifications. Restore crisp, precise performance to your BMW today! ✅ Direct-fit replacement for aging factory bushings ✅ Reduces drivetrain flex and enhances power delivery ✅ Perfect for daily drivers and performance applications 📦 Includes: Full set of differential bushings for a complete refresh.

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

Whitbread CNC Machined Differential Cover - E8X/E9X

T#:4469676

Part#: 33117518412

Ships on Sep 2, 2026

$ 599.99 USD

Add to Wish List

Qty

$ 599.99 USD

Add to Wish List

This differential cover is 100% bolt-in and made in-house from 6061 aluminum. It includes all hardware and a magnetic drain plug to allow for easy gear oil changes. This is a great way to add form and function to your E8X or E9X! WPI or Whitbread Performance Innovations prides themselves on their quality automotive performance parts, service, custom metal fabrication, and machining. When it comes to machined-in-house goods, look no further!

Show More Show Less

Differential Front Mount Bush Kit E8X E9X F3X

T#:385198

Part#: SPF3950K

In Stock at Vendor

$ 119.99 USD

Add to Wish List

Qty

$ 119.99 USD

Add to Wish List

SuperPro Differential Bushings for BMW

Upgrade your BMW's driveline with SuperPro differential bushings to enhance road feel and reduce driveline slop. While stock bushings excel at insulating the cabin from vibrations, they often lack in improving road feedback. SuperPro's differential bushings are engineered to better locate your driveline, providing a more connected driving experience and improved power delivery to the road surface. With over 40 years of experience in manufacturing suspension components and bushings, SuperPro leads the industry in polyurethane technology. These bushings are not just replicas of stock ones; they are meticulously developed to leverage the unique properties of SuperPro's polyurethane blend, ensuring top-notch performance. Expect consistent quality, precise fitment, and minimal increase in noise, vibration, and harshness (NVH) with SuperPro differential bushings.

Enhances road feel and connection to the driving experience
Reduces driveline slop for improved power delivery
Superior polyurethane technology for optimal performance
Meticulously developed and extensively tested for quality assurance
Minimal increase in noise, vibration, and harshness (NVH)

Show More Show Less

Select Vehicle

Purpose

Category

Differential and Gearing Upgrades

Brand

Price

Special Offers

On Sale (4)

Shipping