NCY Super Transmission Kit - Buddy 50, 139QMB, GY6 50cc
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Total Transformation: NCY Super Transmission Performance Kit
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.
What’s Inside the Box?
- NCY Ultralight Drive Face: Reduced rotational mass for faster RPM pickup and improved throttle response.
- Coated Golden Pulley & Pressure Plate: Features a specialized low-friction coating and optimized ramp angles for smooth, "notching-free" shifting.
- NCY Racing Clutch & Bell: High-friction clutch shoes and a vented bell provide maximum grip and heat dissipation, eliminating clutch "shudder."
- Triple Tuning Roller Set: Includes three full sets of 16x13mm weights (7g, 8g, and 9g) so you can perfectly dial in your RPMs to your specific weight and riding style.
- 1000 RPM Compression Spring: Provides the ideal return tension for rapid downshifting when decelerating or climbing hills.
Comprehensive Fitment Guide
This kit is a direct performance upgrade for 50cc and 80cc (139QMB/GY6) engines:
| Brand / Engine Family | Compatible Models |
|---|---|
| Genuine Scooter Co. | Buddy 50, RoughHouse 50, Black Cat 50 |
| QMB139 / GY6 50cc | TaoTao, Wolf, Chicago Scooter Co. (Go/Go Max), Icebear |
| SYM / ADLY | Fiddle 50, Jet 50, Fox 50 |
| 80cc Big Bore Kits | Compatible with 147QMD and upgraded 139QMB engines |
Technical Specifications
- Variator Size: 16mm x 13mm
- Included Weights: 7g, 8g, and 9g (Sets of 6 each)
- Spring Rate: 1000 RPM
- Clutch Type: NCY Performance Non-Adjustable
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!
This product is intended for off-road use only.
This product is not intended for use on public roads or land.
*Performance upgrades are considered racing parts and are not covered by warranty.
WARNING: California’s Proposition 65
SKU: 1200-1171
Vendor: NCY
Shipping information
Orders are prepared as quickly as possible. Delivery times and shipping costs are calculated at checkout based on the destination and items ordered.
Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.