GY6 50cc (139QMB) Performance Clutch Set

Performance Clutch Set for GY6 50cc and 80cc Engines

The GY6 50cc performance clutch set is designed for 139QMB-based engines, improving your scooter's performance. This set includes a ventilated clutch bell that promotes better heat dissipation, extending the life of the clutch. It also comes with a 1500 RPM torque spring for improved engagement and 1000 RPM clutch springs for better responsiveness at lower speeds. This makes it one of the straightforward GY6 50cc scooter parts to install at home.

Improved Heat Management

The ventilated design of the clutch bell aids in dissipating heat effectively, which is important for maintaining performance during rides. This feature not only helps to prolong the clutch's lifespan but also ensures consistent performance under various conditions.

Firmer Engagement and Response

The inclusion of a 1500 RPM torque spring allows for a firmer clutch engagement, providing a more responsive throttle feel. Coupled with the 1000 RPM clutch springs, this setup significantly improves low-end power delivery, making your rides smoother and more enjoyable.

Specifications

• Clutch Bell Inner Diameter: 107mm
• Clutch Bell Outer Diameter: 115mm
• Clutch Inner Diameter: 12mm
• Bearing: 6901 RS
• Number of Splines: 22
• Inner Diameter (Peak to Peak): 11mm
• Inner Diameter (Valley to Valley): 12mm
• Includes: 1500 RPM torque spring, 1000 RPM clutch springs

Fitment

This clutch set is compatible with various 50cc and 80cc 4-stroke engines, specifically designed for the following engine codes:

• 139QMA
• 139QMB
• 1P39QMB
• 1P39QMA-2
• YN139QMB
• JJ1P39QMB
• 139FMA-2
• BD1P39QMB
• BN139QMB
• 147QMD
• Other QMA models
• Other QMB models

Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.

Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Clutches & Clutch Springs · Scooter Parts