This Blue Line Driven Pulley and Clutch Assembly is a complete rear pulley, clutch, and clutch bell for 139QMB 50cc scooters, the Honda GY6-based engine used in the CSC go., go. MAX, Bella, Pug, and Nitro and many other Chinese 50cc scooters. It arrives assembled with clutch shoes, torque spring, and pulley faces, plus a 115mm clutch bell with 22-tooth splines, so you can swap out a worn, slipping, or shuddering clutch in one step.
Features
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Complete assembly: Driven pulley, clutch shoes, torque spring, and clutch bell in one unit.
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115mm clutch bell: Matches the stock 139QMB bell size.
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22-tooth splines: Splined bell hub fits the stock 139QMB drive shaft.
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Vented bell: Ventilation holes help shed heat.
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OEM-equivalent fit: Direct replacement for the original 139QMB assembly.
Specifications
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Part number: 1100-1317
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Alternate part number: 151-232
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Clutch bell outer diameter: 115mm
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Clutch bell inner diameter: 11mm
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Splines: 22
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Engine: 139QMB 50cc 4-stroke (Honda GY6-based)
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Brand: Blue Line
Model Fitment
| Brand |
Models |
| Chicago Scooter Company |
go., go. MAX, Bella, Pug, Nitro |
| Primary application |
Honda GY6-based 50cc scooters |
| Engine codes |
139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, BD1P39QMB, BN139QMB |
The 139QMB is a 50cc engine based on the Honda GY6 design and widely used across Chinese and Taiwanese 50cc scooters. Check the engine code stamped on your scooter before ordering. Engines marked with a listed 139QMA/139QMB code may use this part, but verify the clutch bell diameter and spline count against your original part.
