QMB / Honda Dio | CVT Performance Upgrade – Part #: 1200-1251
Upgrade your scooter’s CVT performance with the NCY Driven Secondary Sliding Sheave, designed for QMB139 GY6 50cc engines and Honda Dio-style transmissions. This precision-machined sheave improves belt alignment and shifting smoothness, allowing for more efficient power transfer and better acceleration throughout the RPM range.
Built for high-performance CVT setups, this sheave is a must-have for anyone running big bore kits, high-RPM clutch springs, or aftermarket variators and looking to fine-tune their transmission for maximum response.
