Blue Line 139QMB rear axle / output shaft dimensional diagram — 133mm total length, 20 splines, 27mm center diameter, 17mm smooth end, 16mm thread end Blue Line 139QMB rear axle / output shaft dimensional diagram — 133mm total length, 20 splines, 27mm center diameter, 17mm smooth end, 16mm thread end
139QMB output shaft — gear end spline detail 139QMB output shaft — gear end spline detail
Blue Line Rear Axle, Output Shaft, Final Drive Shaft; QMB139 - Spline detail view Blue Line Rear Axle, Output Shaft, Final Drive Shaft; QMB139 - Spline detail view
Rear Axle, Output Shaft, Final Drive Shaft; 139QMB output shaft — thread end detail Rear Axle, Output Shaft, Final Drive Shaft; 139QMB output shaft — thread end detail
Blue Line 139QMB rear axle / output shaft dimensional diagram — 133mm total length, 20 splines, 27mm center diameter, 17mm smooth end, 16mm thread end
139QMB output shaft — gear end spline detail
Blue Line Rear Axle, Output Shaft, Final Drive Shaft; QMB139 - Spline detail view
Rear Axle, Output Shaft, Final Drive Shaft; 139QMB output shaft — thread end detail

Scooterworks USA, LLC

Blue Line Rear Axle / Output Shaft for 139QMB 50cc | 133mm

SKU 1100-1324
$15.00
Shipping calculated at checkout.
Description

A replacement rear axle (also called output shaft or final drive shaft) for 139QMB-based 50cc 4-stroke scooter engines. Fits Chicago Scooter Company go, go MAX, Bella Classic 50, Pug 50, and Nitro Sport 50, as well as any scooter running a 139QMB or compatible engine code. SKU: 151-55.

  • Direct OEM replacement rear axle / output shaft / final drive shaft
  • 20-spline ends for positive gear engagement
  • Fits 139QMB and compatible 50cc/80cc 4-stroke engine codes
  • SKU: 151-55

Specifications

  • Total Length: 133mm
  • Splines: 20 (both ends)
  • Center Shaft Diameter: 27mm
  • Smooth End Diameter: 17mm
  • Thread End Diameter: 16mm
  • SKU: 151-55

Compatible Engine Codes

Note:  There are many different output shafts on the market.   Shafts will vary by model to conform to OEM wheel size, single or dual suspension, etc.  MEASURE your output shaft prior to ordering to make sure this is compatible.

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


Compatibility

Make Model
Chicago Scooter Company  139QMB 50cc models
TaoTao 139QMB 50cc models
Jonway 139QMB 50cc models
ZNEN 139QMB 50cc models
Wolf Brand Scooters 139QMB 50cc models
BMS 139QMB 50cc models
Icebear 139QMB 50cc models
Bintelli 139QMB 50cc models
SSR Motorsports 139QMB 50cc models
Schwinn 139QMB 50cc models
Various 139QMB/QMA 50cc 4-stroke scooters w/ 133mm shafts.

 

California Prop 65 Warning: www.p65warnings.ca.gov
Product Diagrams
Features
  • Direct OEM replacement rear axle / output shaft / final drive shaft
  • 20-spline ends for positive gear engagement
  • Fits 139QMB and compatible 50cc/80cc 4-stroke engine codes
  • SKU: 151-55
Specifications

Total Length: 133mm | Splines: 20 (both ends) | Center Shaft Diameter: 27mm | Smooth End Diameter: 17mm | Thread End Diameter: 16mm | SKU: 151-55
Model Fitments

Chicago Scooter Company go/go MAX/Bella Classic 50/Pug 50/Nitro Sport 50 — and all 139QMB/QMA 50cc 4T scooters from TaoTao, Jonway, ZNEN, Wolf Brand, BMS, Icebear, Bintelli, SSR Motorsports, Schwinn, and other Chinese-manufactured brands
  • 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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