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These diff mounts are only recommended for racecars since the aluminum transfers more noise and vibration. And since there is no time lost to deflection, response is greatly improved. The power used to compress that bushing is instead passed straight to the axles and wheels. The high deflection rate of the stock rubber means the suspension reacts slower as the bushing is compressed. These fully solid aluminum diff mounts are CNC machined and lightened for a direct replacement of the original rubber pieces.īy substituting aluminum for rubber we can take out all of the deflection and 'wind up' inherent to the original rubber pieces. The advantages of a fully-solid aluminum set is that they last forever, quickens response in the suspension, and frees up horsepower to the wheels. Need a custom diff? Call or e-mail to have a quote.Īdd to Wish List For our Grand-Am Cup E46 M3s we wanted a fully solid differential mount setup. We can also vary ramp angles and setup to change the limited-slip behavior under acceleration, deceleration, and cornering.
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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. But nothing beats the function and feel of a a true LSD which may be why BMW continues to use them in M cars. 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). Limited Slip Upgrades - Sadly, many BMWs today are not equipped with a limited slip (posi-traction) differential.
#E46 m3 differential upgrade upgrade
If you can trade outright top speed for faster acceleration at daily speeds then this is the perfect upgrade for you. 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. Ratio Changes - Changing the differential gearing is one of the best and most-effective upgrades you can make on any BMW (old or new). We also design and supply bushing options to reduce driveline wind-up, finned differential covers for better cooling, and more! The options are almost endless! Every custom-built diff is fully rebuilt with seals and bearings. You can purchase the ring & pinion gear sets on their own (professional installation required) or have us build a diff around your own specifcations.
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Our differential options vary from gearing upgrades to limited slip conversions. The engine is not the only place to make the car faster. It's easy to forget that the differential is a source for making your car faster and handle better so it's often overlooked. Upgrading various parts of the differential can have tremendous benefits in your car's performance.