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Limited Slip Differentials

BMW stopped using truly limited-slip differentials with the advent of the E9X and E60 platforms. The advantages between an open and limited-slip differential are seconds on the track and a massive increase in corner exit grip. Tuner motorsports offer many different types of LSDs' to suit your driving style and budget.
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ECS - Corporate Logo
T#:35121162
Part#: 056350LA01
In Stock
Sale - Save 25% $ 30.99

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

$ 23.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 30.99

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

$ 23.24 USD
Free Shipping on orders $49 and up

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

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OS Giken - Corporate Logo
T#:34382136
Part#: BM237HAKT
Ships in 2 Business Days
$ 2,100.00 USD
Free Shipping on orders $49 and up
Upgrade to a better performing LSD, includes tune.
Wavetrac - Corporate Logo
T#:22723746
Part#: 56309191WK
Ships in 2 Business Days
$ 1,065.99 USD
Free Shipping on orders $49 and up
  • 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.
  • Limited LIFETIME Warranty: All Wavetrac® differentials include a transferable, limited lifetime warranty.
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    Wavetrac - Corporate Logo
    T#:383305
    Part#: 30309176WKWVT
    Ships in 2 Business Days
    $ 1,245.99 USD
    Free Shipping on orders $49 and up

    Upgrade your BMW E46 with the Turner Motorsport Wavetrac Limited Slip Differential, featuring innovative design and superior materials for enhanced performance. This differential utilizes patented Wavetrac technology to automatically improve grip in low-traction conditions, setting it apart from traditional torque biasing differentials. Here are the key benefits:

    • Innovative design improves grip in low traction conditions
    • High-strength 9310 steel gears ensure durability
    • ARP fasteners used throughout for reliability
    • Maintenance-free operation for the lifetime of the differential
    • Transferable limited lifetime warranty for peace of mind

    For additional technical information, visit: http://www.wavetrac.net/technical.htm

    Fits ratios 2.47 – 3.07.

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    Quaife - Corporate Logo
    T#:7
    Part#: TMS7
    Ships in 4 Business Days
    $ 1,732.99 USD
    Free Shipping on orders $49 and up
    As Used on our Project Mini Cooper S
    The Quaife torque biasing differential enables your car to accelerate quicker and corner faster. How? By getting the power to the ground! The Quaife Differential powers both drive wheels under nearly all conditions, instead of just one. With an ordinary open differential, standard on all MINI's, a lot of precious power is wasted during wheelspin under acceleration. This happens because the open differential shifts power to the wheel with less grip (along the path of least resistance). The Quaife, however, does just the opposite. It senses which wheel has the better grip, and biases the power to that wheel. It does this smoothly and constantly, and without ever completely removing power from the other wheel.
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    Genuine BMW - Corporate Logo
    T#:29898444
    Part#: 33109894394KT
    Ships in 8 Business Days
    $ 993.99 USD
    Free Shipping on orders $49 and up

    BMW's latest iteration of Limited Slip Differentials features a design utilizing clutch packs that are engaged and disengaged by an electric motor. As the electric motor activates, a set of gears adjusts a pressure plate which compresses these clutch packs. As these clutch plates are compressed, the amount of "lock-up" increases, allowing for a range of wide range of engagement, from completely open to almost fully locked. This ensures your BMW is able to transfer power to the ground regardless of the conditions for optimal performance and handling.

    If you've noticed excess tire slippage in wet or snowy conditions, there is a chance this electric actuator motor has begun to fail and will need to be replaced to restore your M Sport differential's functionality. This kit includes all of the basic components necessary to replace this motor. 

    Referred to by BMW as an Actuator, Position Sensor, and Set Positioning Motor

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    Packaged by Turner - Corporate Logo
    T#:55965861
    Part#: 30309175WKWVTKT2
    Ships in 10 Business Days
    New Item
    $ 1,269.99 USD
    Free Shipping on orders $49 and up
    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.
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    Cusco - Corporate Logo
    T#:43041729
    Part#: LSD BM0 C15
    Back Ordered
    3% off MSRP $ 1,480.00

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

    $ 1,435.60 USD
    Free Shipping on orders $49 and up
    3% off MSRP
    $ 1,480.00

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

    $ 1,435.60 USD
    Free Shipping on orders $49 and up