The forged aluminum TFC Racing Torque Drive is a high-end rear CVT drive pulley designed for GY6 125cc to 150cc engines—particularly those found on Honda Ruckus GY6 and similar platforms.
In a CVT transmission, the rear pulley (Torque Drive) adjusts its position in response to engine load and speed, modulating the final drive ratio relative to the belt and front variator. This component directly influences:
acceleration under load
rpm stability
traction linearity
belt behavior
The forged aluminum TFC Racing version features:
a high-strength forged aluminum body
→ greater rigidity, improved stress tolerance
precision-machined internal surfaces
→ smooth belt path
optimized internal ramp profile
→ improved response to load variations
Outer diameter: 142mm, inner diameter: 64mm.
