Eliminate CVT lag and unleash the full potential of your 50cc engine with the NCY Super Transmission Kit. This is the most comprehensive bolt-on performance set available, engineered to deliver explosive off-the-line acceleration, lightning-fast downshifting, and a higher top-end cruising speed. Whether you are navigating heavy city traffic or opening it up on the backroads, this professionally curated kit replaces your entire drive system with high-performance components designed to work in perfect harmony.
This kit is a direct performance upgrade for 50cc and 80cc (139QMB/GY6) engines:
Mechanic's Note: This is our #1 recommended upgrade for any 50cc scooter.
Fitment Warning: For Genuine Buddy 50 and RoughHouse 50 owners, you must reuse your original OEM outer drive face for proper clearance.
Tuning Tip: Start with the 8g weights for a balanced feel; if you want more "zip" off the line at the expense of fuel economy, drop down to the 7g weights.
Pro Tip: Always install a fresh Premium Drive Belt when installing this kit to ensure maximum grip!
*Performance upgrades are considered racing parts and are not covered by warranty.
WARNING: California’s Proposition 65
SKU: 1200-1171 Vendor: NCY
