Tuning Variator for 50cc GY6 139QMA / 139QMB – 4T (with 2 Sets of Rollers)

Description

Performance variator kit for GY6 50cc 4-stroke engines (139QMA / 139QMB), designed to improve acceleration, power delivery, and top speed. Ideal for riders looking to upgrade from the stock variator without major modifications.

This kit includes two sets of roller weights, allowing you to fine-tune the variator’s response based on your riding style – either more torque at low RPM or higher top-end speed.