BMW Differential and Gearing Upgrades for BMW 5 Series F10 (2011-2016)

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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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Turner Titanium Magnetic Differential Drain Plug - M22x1.5
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:593924
Part#: 027030TMS01
In Stock
Sale - Save 25% $ 89.99

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

$ 67.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 89.99

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

$ 67.49 USD
Free Shipping on orders $49 and up
When both extreme-duty protection and saving every gram matters: the Turner Magnetic Differential Drain Plug.
ECS - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 62.99

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

$ 47.24 USD
Free Shipping on orders $49 and up
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
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Powerflex - Corporate Logo
T#:638068
Part#: PFR5-6031
In Stock
$ 69.99 USD
Free Shipping
$ 69.99 USD
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As a direct replacement for the OE rubber bushings, these new bushings reduce movement in the differential preventing the commonly experienced rear-end transmission 'thud' while offering improved performance and durability. Replaces OE Part Number: 33316797238 & 33316792872
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Powerflex - Corporate Logo
T#:638069
Part#: PFR5-6032
Back Ordered
$ 110.99 USD
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$ 110.99 USD
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As a direct replacement for the OE rubber bushings, these new bushings reduce movement in the differential preventing the commonly experienced rear-end transmission 'thud' while offering improved performance and durability. Replaces OE Part Number: 33316792873
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Limited Slip Differential - E46
For models with an Automatic Transmission only and bolted ring gear
Wavetrac - Corporate Logo
T#:383304
Part#: 30309175WKWVT
Ships in 10 Business Days
$ 1,245.99 USD
Free Shipping
$ 1,245.99 USD
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The Wavetrac® Torque Biasing Differential introduces an innovative solution for BMW enthusiasts. With its patented design, the Wavetrac® differential automatically enhances grip in low-traction conditions, setting it apart from conventional torque biasing differential designs.

Crafted with precision, the Wavetrac® differential features high-strength 9310 steel gears encased in case-hardened billet or forged steel bodies. ARP® fasteners are utilized throughout the differential, ensuring robustness and exceptional performance.

One of the defining features of the Wavetrac® differential is its maintenance-free design. Fresh from the factory, it's engineered to deliver a lifetime of service without the need for regular maintenance or rebuilds. To bolster the commitment to durability, all Wavetrac® differentials come with a transferable limited lifetime warranty.

For those seeking additional technical insights, comprehensive information on the Wavetrac® Differential can be found at this link: Wavetrac Technical Information.

It's important to note that the Wavetrac® differential is compatible with gear ratios of 3.15 and higher.

Important Note for Bolt Kits:

For vehicles equipped with a welded ring gear, the installation of this differential necessitates the removal, drilling, and installation of the welded ring gear from your stock differential. A Bolt Kit ES4368731 is an essential component for installing the ring gear onto the new differential. We strongly recommend consulting with a professional machine shop before purchasing this item and the necessary hardware kit. Please be aware that no technical drawings or instructions are provided, underscoring the importance of verifying compatibility and ensuring correct installation with your chosen machine shop.

It's crucial to be aware that no refunds or replacements will be offered if the differential has been installed or machined, or in the event of incorrect ring gear installation or differential failure due to improper installation.

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Wavetrac - Corporate Logo
T#:363876
Part#: 30309172WKWVT
Ships in 2 Business Days
$ 1,245.99 USD
Free Shipping
$ 1,245.99 USD
Free Shipping
Wavetrac® Torque Biasing Differential Innovative: Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing differential design. Superior Materials: High-strength 9310 steel gears are used in case-hardened billet or forged steel bodies. ARP® fasteners are used throughout the differential. Maintenance Free: As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds. Additional technical information on the Wavetrac® Differential can be found at the following link: http://www.wavetrac.net/technical.htm For vehicles with a welded ring gear: This differential requires the welded ring gear from your stock differential to be removed, drilled, and installed at a professional machine shop. Bolt Kit ES4368731Wavetrac® Torque Biasing Differential Innovative: Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing differential design. Superior Materials: High-strength 9310 steel gears are used in case-hardened billet or forged steel bodies. ARP® fasteners are used throughout the differential. Maintenance Free: As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds. Additional technical information on the Wavetrac® Differential can be found at the following link: http://www.wavetrac.net/technical.htm For vehicles with a welded ring gear: This differential requires the welded ring gear from your stock differential to be removed, drilled, and installed at a professional machine shop. Bolt Kit T#1377522 is required to install the ring gear to the new differential. No technical drawings or instructions are provided, please check with your machine shop before purchasing this item and/or the required hardware kit! No refunds or replacements will be offered if the differential has been installed or machined or in the event of incorrect ring gear installation or differential failure due to incorrect installation.
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Powerflex Black Series - Corporate Logo
T#:33880006
Part#: PFR5-6031BLK
Back Ordered
$ 76.99 USD
Free Shipping on orders $49 and up

The BMW F10/F07 Rear Diff Rear Mount Bushing by Powerflex is a specialized upgrade designed to replace the OEM rubber bushings in the rear differential mount. Here's a breakdown of its key features and benefits:

  1. Durability and Longevity: Made from high-quality polyurethane, these bushings are significantly more resistant to wear compared to the stock rubber, which tends to degrade over time due to heat, oils, and mechanical stress.

  2. Enhanced Performance: The stiffer material reduces flex in the rear differential, ensuring more precise power transfer to the wheels. This results in better acceleration response, reduced wheel hop, and improved handling characteristics, especially during aggressive driving.

  3. Reduced Differential Movement: The stock bushings can allow excessive differential movement under load, leading to a less stable rear end. The Powerflex bushings minimize this movement, enhancing the overall driving dynamics.

  4. Balanced Comfort and Performance: While polyurethane bushings are firmer than rubber, Powerflex designs their bushings to maintain a balance between performance and comfort. This means less increase in vibration, noise, and harshness (NVH) compared to other aftermarket bushings, making them suitable for both daily driving and performance applications.

  5. Custom Fit for BMW F10/F07: Specifically engineered for the BMW 5 Series (F10) and BMW 5 Series GT (F07), these bushings offer a precise fit, ensuring easy installation and compatibility with factory components.

Overall, the Powerflex Rear Diff Rear Mount Bushing is a go-to upgrade for those looking to improve their BMW’s rear-end stability, responsiveness, and durability without sacrificing too much comfort.

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Powerflex Black Series - Corporate Logo
T#:33880011
Part#: PFR5-6032BLK
Ships in 1 Business Day
$ 121.99 USD
Free Shipping on orders $49 and up
The BMW F10/F07 Rear Diff Front Mount Bushing from Powerflex is a performance-enhancing replacement part designed for the rear differential mounting system. Here are its main features: Polyurethane Construction for Longevity: Made from high-quality polyurethane, these bushings outperform traditional rubber bushings by resisting wear from heat, oils, and road contaminants. This means they provide a longer service life, reducing the need for frequent replacements. Enhanced Power Transfer: By limiting excess differential movement, the stiffer Powerflex bushings allow more precise power transfer to the rear wheels. This results in sharper throttle response and improved overall drivetrain efficiency, especially during spirited driving. Increased Rear-End Rigidity: The factory rubber bushings allow for some differential movement, which can lead to instability. The Powerflex bushings reduce this flex, resulting in a more stable and predictable rear end, particularly when cornering or under heavy acceleration. Improved Handling and Stability: With reduced play in the differential mounting points, the rear suspension geometry stays more consistent. This translates to sharper handling, better grip in corners, and a more connected driving experience, making the vehicle feel more composed. Controlled NVH (Noise, Vibration, and Harshness): Powerflex engineers their bushings to strike a balance between performance and comfort. While polyurethane is stiffer than rubber, these bushings are designed to minimize the increase in NVH, ensuring that the ride remains comfortable for daily driving while still benefiting from enhanced performance. Direct Fitment for BMW F10/F07: These bushings are specifically designed for the BMW 5 Series (F10) and BMW 5 Series GT (F07), providing an easy, direct replacement for the original equipment. This ensures compatibility and smooth installation. The Powerflex Rear Diff Front Mount Bushing is ideal for BMW enthusiasts seeking to upgrade their vehicle's rear differential stability and performance, particularly for high-performance driving or in modified cars.
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