B-Series 1-2 Sleeve and Synchro Set

Part# SO-137 1-2 Sleeve B-Series (89-01)

MFactory Final Drive Gears. By changing your final gear ratios, you can experience a dramatic increase in acceleration.

Gain a prominent advantage over the competition with the MFactory Helical Limited Slip Differential. Through the smooth and constant distribution of power to the wheels, the MFactory Helical LSD puts the power-to-the-ground and maximizes your vehicle's traction. A must for any performance street or drag race car.

Wavetrac®: Designed from a clean sheet using state-of-the-art knowledge and engineering to be a better differential than any other. It uses a patented design to improve grip in low traction conditions. Wavetrac®: Gives you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market