NCY CVT KIT (139QMB, Buddy, RoughHouse)
Description: NCY CVT Kit 139QMB aka Super CVT transmission kit for GY6 50cc engines is one of the best dollar-for-dollar bolt-ons to improve your 139QMB, Buddy50, or RoughHouse scooter! Quicker acceleration, reach faster top speeds, and makes your 139QMB CVT the smoothest running transmission in town! From rapid downshifting to slow cruising, this thing is smooth. Ultralight balanced components, oversized wear pads, and state of the art polytetrafluoroethylene (PTFE) coatings ensure superior performance and long service life.
NOTE: If installing on a Genuine Buddy 50 or RoughHouse 50 must re-use the drive face and belt-size 738-18-30 (sold separately). Recommend using a new belt with this kit. Belt and the belt drive facing plates KEEP DRY. All, other areas apply moly-graphite grease when assembling. Must re-use stock variator boss, variator fan overlay, washers, secondary sheave seat/funnel, clutch back-ramp plate, clutch nut, and nuts. Most parts also will fit Honda DIO's CVT.
Installation: Make sure variator drive face is seated properly and not get its teeth chewed by the Bendix: 1. Slack the belt by opening the CVT clutch gives belt slack to the variator side. 2. Then install the variator drive face while lifting the slack belt further away from the center boss if done properly should not see any splines between variator drive face slop-side and boss flat-side. Should be flushed together. 3. Then install the existing variator fan, washer, and hand-tight nut. 4. Finally, apply blue Loctite, torque nut to 30-35ft lbs. For reassurance please consult your manufacturer variator torque specs.
1. Includes NCY Drive Face CNC-Machined, Drive Face, and Kickstart him.
• 1x Drive Face ID: 13.5mm (Splines 26) / OD: 112.3mm (Teeth 63) / H: 4.2<13.5mm
• 1x Stainless Steel Kickstart Him ID: 13.5mm (Splines 26) / OD: 34.32mm / H: 4<7.3mm
2. Includes NCY Variator 89mm Coated Gold, Roller weights, Variator housing, Variator slides, and Variator top.
• 1x Alumin-Alloy Housing Teflon Coated ID: 20mm / OD: 89mm / H: 32.44mm
• 1x Metal Top ID: 14.15mm / OD: 73.50mm / H: 11.58mm
• 6x Roller Weights (red): 16x13 9gm
• 3x Plastic Slides (red)
3. Includes NCY Secondary Slider, slider (torque driver), and O-rings.
• 1x Secondary Slider Funnel ID: 33.5mm / OD: 43mm / H: 32.70mm
• 1x Secondary Slider Plate OD: 118mm
4. Includes NCY Compression Spring 1000 RPM, Compression spring.
• 1x Spring Comp (black): 1,000 RPM / L: 106mm
• Spring ID: 49.6mm / OD: 57.8mm
• Wire Gauge: 4mm
5. Includes NCY Clutch Performance, Clutch housing, Clutch springs, and Clutch weights.
• 1x Clutch ID: 24<28mm / OD: 105mm / H: 29.55mm
• 3x Clutch Spring (red): 2000 RPM
• 3x Clutch Weights (gray)
6. Includes NCY Clutch Bell, Clutch Bell PTFE Coated.
• 1x Iron Clutch Bell Vented ID: 107mm / OD: 114.85mm / H: 34.54mm
• Splines: 22 / ID: 11<12mm / OD: 16.95mm / H: 17.75mm
• Made in Taiwan
• Fit Belt Size: 669, 729, 788
• Fit Dowel Pin Set (8x14mm)
• Fit QMB 49/50cc+
Supported Models: GY6 139QMB 49cc-50cc engines, Buddy50, Filly 50, Kymco, QLink, RoughHouse, SYM, TaoTao, and virtually any scooter engine with these measurements.
Item Weight & Package Dimensions:
• 3.862 pounds | 17.5” (L) x 6.4” (W) x 5” (H)