B-Series 1-2 Sleeve and Carbon Synchro Set

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

Part# SO-137B Brass Synchro Sleeve Set 1-2 GSR ITR B16 (92-01)

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.