Keep your CVT transmission running smoothly with this drive face for QMB139 50cc 4-stroke scooter engines. Designed as the outer pulley face for the variator assembly, this component plays a critical role in belt engagement, acceleration, and overall drivetrain performance.
Compatible with most Chinese 50cc scooters using the short-case GY6 (QMB139) engine platform, this drive face features precision-machined surfaces and cooling fins for optimal performance and longevity.
-
Fits: QMB139 50cc 4-stroke (GY6 short-case) engines
-
Function: Variator drive face — works with the CVT belt and variator
-
Material: Durable cast aluminum or steel alloy
