Blue Line 139QMB driven pulley and clutch assembly - complete kit showing clutch shoes and bell Blue Line 139QMB driven pulley and clutch assembly - complete kit showing clutch shoes and bell
Blue Line 139QMB clutch bell top view showing 22-spline center hub and ventilation holes Blue Line 139QMB clutch bell top view showing 22-spline center hub and ventilation holes
Blue Line 139QMB clutch bell bottom view showing splined bore and cast construction Blue Line 139QMB clutch bell bottom view showing splined bore and cast construction
Blue Line 139QMB driven pulley assembly showing clutch shoes, spring, and rear pulley faces Blue Line 139QMB driven pulley assembly showing clutch shoes, spring, and rear pulley faces
Blue Line 139QMB clutch bell with dimension callouts - 115mm OD, 11mm ID, 22 splines Blue Line 139QMB clutch bell with dimension callouts - 115mm OD, 11mm ID, 22 splines
Blue Line 139QMB driven pulley and clutch assembly - complete kit showing clutch shoes and bell
Blue Line 139QMB clutch bell top view showing 22-spline center hub and ventilation holes
Blue Line 139QMB clutch bell bottom view showing splined bore and cast construction
Blue Line 139QMB driven pulley assembly showing clutch shoes, spring, and rear pulley faces
Blue Line 139QMB clutch bell with dimension callouts - 115mm OD, 11mm ID, 22 splines

BLUE LINE

Blue Line 139QMB Driven Pulley & Clutch - GY6 50cc Scooters

SKU 1100-1317
$65.00
Shipping calculated at checkout.
Description

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.

Key Features

  • Complete assembly: Driven pulley, clutch shoes, torque spring, and clutch bell in one unit.
  • 115mm clutch bell: Matches the stock 139QMB bell size.
  • 22-tooth splines: Splined bell hub fits the stock 139QMB drive shaft.
  • Vented bell: Ventilation holes help shed heat.
  • OEM-equivalent fit: Direct replacement for the original 139QMB assembly.

Technical Specifications

  • Part number: 1100-1317
  • Alternate part number: 151-232
  • Clutch bell outer diameter: 115mm
  • Clutch bell inner diameter: 11mm
  • Splines: 22
  • Engine: 139QMB 50cc 4-stroke (Honda GY6-based)
  • Brand: Blue Line

Compatibility

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.
Product Diagrams
Features
  • Complete rear pulley and clutch assembly
  • 22-tooth spline clutch drum bell
  • 115mm outer diameter clutch bell
  • 11mm inner diameter bore
  • OEM-equivalent fit for Honda GY6-based 139QMB 50cc engines
  • Vented clutch bell
Specifications

Part Number: 1100-1317 | Alternate Part Number: 151-232 | Clutch Bell OD: 115mm | Clutch Bell ID: 11mm | Splines: 22 | Engine: 139QMB 50cc 4T (Honda GY6-based) | Brand: Blue Line
Model Fitments

CSC go., go. MAX, Bella, Pug, Nitro | Honda GY6-based 50cc scooters with 139QMA/139QMB engine codes: 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, BD1P39QMB, BN139QMB
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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