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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.

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2-Piece Rear Subframe Bushing - Rear Position (95A) - F8X G2X G8X ...

T#:53326250

Part#: 056755LAKT

In Stock

$ 104.98

This product was last offered at the strikethrough price on
05-07-2026

$ 100.98 USD

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$ 100.98 USD

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Enhance rear-end control and put more power to the ground with a straightforward 3-piece design that installs with ease. The factory rubber may favor ride comfort, but it struggles to keep up when driving gets aggressive. As it wears, the OEM bushing can soften and deform, reducing stability and allowing wheel hop to creep in when you need traction most.

Our 95A durometer polyurethane bushings solve that problem. Engineered to strike the perfect balance between soft factory rubber and harsh solid mounts, they significantly reduce differential movement without introducing excessive vibration. The result is more efficient power transfer, so your torque goes straight to the rear wheels instead of being lost in drivetrain flex.

Features & Benefits:

Minimizes differential movement and instability to help eliminate wheel hop
Two-piece 95A split polyurethane design for easier installation
Precision-fit insert reinforces the bushing and strengthens mounting points
Resistant to road salt, oils, and harsh chemicals
Compatible with dual mount differential plates
Design:

Type II Anodized 6061-T6 CNC billet aluminum inserts for superior corrosion resistance and durability.
95A Polyurethane 2-Piece Isolator.
Product Development:

Our Rear Differential Bushings are designed, engineered, tested, and quality inspected by our Research & Development team. Our development process includes leading-edge product technology: FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

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

T#:49822560

Part#: BMSDSBBG

Ships on Aug 28, 2026

$ 229.00 USD

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$ 229.00 USD

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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.

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Vargas Rear Bushing Insert Kit - BMW G0X X3/X4, G11/12 7

T#:51778109

Part#: VTT-X3-REAR-INSE

Ships in 10 Business Days

$ 109.99 USD

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$ 109.99 USD

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The VTT G0X Rear Bushing Insert Kit is a critical preventative upgrade for owners of BMW G-Series vehicles.

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

T#:54388516

Part#: RE.484.FIX

Ships in 8 Business Days

$ 64.00 USD

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$ 64.00 USD

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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.

Vargas Front Differential Bushing Reinforcement Insert Kit - Front - ...

T#:52129733

Part#: G8XDIFFINSFRT

Ships in 10 Business Days

$ 132.99 USD

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$ 132.99 USD

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The Vargas Turbo Technologies Front Diff Reinforcement Kit is a vital upgrade for high-horsepower S58-powered vehicles.

Vargas Front Differential Bushing Reinforcement Insert Kit - Rear - B...

T#:52129737

Part#: G8XDIFFINSTRO

Ships in 10 Business Days

$ 132.99 USD

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$ 132.99 USD

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The G8X Rear Billet Diff Insert Kit is a precision-machined reinforcement component that installs directly into the rear differential bushing.

Vargas Billet Differential Lock Down Kit - Black - BMW G8X

T#:52129738

Part#: VTT-G8X-LOCKDOWN

Ships in 10 Business Days

$ 739.99 USD

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$ 739.99 USD

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This black-anodized kit provides the reinforcement BMW intended but never fully realized in the factory design.

FINAL DRIVE (FRONT AXLE)

T#:56869544

Part#: 31507648879

Ships in 8 Business Days

4% off MSRP $ 3,279.99

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

$ 3,132.99 USD

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Qty

4% off MSRP

$ 3,279.99

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

$ 3,132.99 USD

Add to Wish List

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Differential and Gearing Upgrades
- Differential Bushings (6)
- Differential Assemblies (1)

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