Save $200 of Limited Slip Differential Upgrades for the month of January!
Ugrading the differential can have tremendous benefits in your BMW's performance. Don't be fooled into thinking the engine is the only place to make the car faster! The differential can make your car both faster and actually improve handling. Delivering power to both rear wheels, by way of a limited slip diff unit, allows more control, better launch, and better acceleration. Our differential options include gear ratio upgrades as well as limited slip conversions making the otions almost endless! Each custom-built diff is fully rebuilt with seals and bearings. We also design and supply bushing options to reduce driveline wind-up (many on sale this month for 15% off), as well as finned differential covers for imrpoved 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.