NCY Performance Clutch Drum: Buddy 125/170i, GY6 150, Navi

Eliminate mid-range transmission slipping and rough takeoff shudder with the premium NCY Performance Lightened Clutch Bell. Engineered specifically as an upgraded replacement for 125cc to 170cc 4-stroke CVTs, this bell features a lightened housing that allows your engine to rev up faster into its peak power band while reducing parasitic rotational mass compared to heavy OEM components.

Engineered for high-stress urban commuting and performance tuning, the internal drum surface features a specialized light texture that provides maximum friction bite. This prevents glazing under intense heat and optimizes transmission engagement.

Product Features

• Lightened Rotor Profile: Reduces inertial mass for faster RPM spooling and crisper throttle response off the line.
• Cross-Drilled Ventilation: Precision-milled cooling ports rapidly dissipate operational heat and allow centrifugal dust debris to escape the clutch assembly.
• Anti-Glaze Textured Interior: Mildly knurled friction lining ensures immediate clutch pad bite, eliminating common shuddering loops.
• Heavy-Duty Forged Steel: Rigid, distortion-resistant outer ring prevents the bell from expanding or warping under high thermal strain or racing loads.

Technical Specifications

• Internal Diameter (ID): 125mm
• External Diameter (OD): 137mm
• Shaft Fitment Layout: 19-Spline Receiver
• Manufacturer Brand: NCY
• SKU Reference: 1200-1031 (Scooterworks Reference: 8651732156696)

Comprehensive Model Fitment Matrix

This 125mm internal diameter performance bell is a direct bolt-on upgrade for standard short-case and long-case 125cc–170cc engine configurations.

Mechanic's Note: To ensure the best "break-in" for your new transmission parts, we recommend pairing this bell with an NCY Racing Clutch. Always clean the internal surface of the bell with brake cleaner before installation to remove any protective shipping oils.

Part Number: 1200-1031
Manufacturer: NCY Taiwan (ISO 9001 Certified)

California Prop 65 Warning

*Performance upgrades are considered racing parts and are not covered by warranty.

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