Sierra 7″ 3.62 Crownwheel & Pinion Heavy Duty (CWP)

Heavy Duty Quaife Tran-X Final Drive Crown Wheel & Pinion Kit with 3.62:1 (13/47) ratio for Sierra 7″ Axle.

Performance Crownwheel (47T) & Pinion (13T) Kit suitable for Ford Sierra Axle.

Best Available Top Quality Heavy Duty Crownwheel & Pinion. We have sold thousands of Quaife Tran-X CWPs worldwide for over 15 years and they have proved to be the best.

In a Front-Engined, Rear Wheel Drive application, the Crownwheel and Pinion (CWP) transfers engine torque from the propshaft to the cars differential (LSD) and then to the road wheels via the drive (half) shafts. As a function of this process the crownwheel and pinion ratio is the principal variable controlling the overall gearing, which means that changing it has a significant effect on vehicle performance.

It is extremely important to tailor the CWP ratio to the engine characteristics and desired vehicle speed, whether it is for a road based trackday car or an outright competition vehicle that requires fine tuning from circuit to circuit.