Stage6 CNC drive face/ front variator pulley for CPI/ Chinese 50cc 2-stroke scooters with 16mm crankshafts.

In order to keep costs down, original racing drives are usually cast or - even worse - pressed steel. When these parts are cooling down after casting, the metal is still molten and the drive face angles can often vary. These tolerances have direct consequences on the power output. In contrast to those standard versions, the Stage6 racing drive is precisely CNC cut out of solid material.

All in all, more than twelve different versions were tested to find the optimal angle.The high quality alloys and the special surface coating used in this drive face make cooling fins unnecessary. Also the reduced mass improves power at the rear wheel. This racing drive was actually developed for drag races, but has been successfully used in racing.

Stage6 S6-5119500