Blue Line 139QMB Gearbox Output Drive Shaft Axle - 155mm

Description

This Blue Line 155 mm gearbox output drive shaft replaces a worn or damaged shaft in the final-drive gearbox of compatible single-shock 139QMB scooters, helping get your scooter back on the road. Its 16-tooth gear, 22-spline wheel connection, and M10 × 1.25 threaded end provide the key specifications to match against your original shaft.

Features

• Gearbox output replacement: Transfers drive from the final-drive gearbox to the rear wheel on matching applications.
• Single-shock configuration: For 139QMB scooters using the 155 mm output-shaft setup.
• 16-tooth gear: Match the gear tooth count and profile to your existing gearbox.
• 22-spline connection: Provides the rear-wheel interface for a matching wheel hub.
• Threaded wheel end: M10 × 1.25 thread specification for matching retaining hardware.

Specifications

• Brand: Blue Line
• Part number: 1100-1323
• Part type: Gearbox output drive shaft
• Overall length: 155 mm
• Wheel splines: 22
• Gear teeth: 16
• Thread size: M10 × 1.25
• Application: Matching single-shock 139QMB scooters

Model Fitment

Compare overall length, gear teeth and profile, wheel splines, thread size, bearing and seal journals, and shoulder positions with your original shaft before ordering. This is the 155 mm shaft for the single-shock configuration, not a universal replacement for every 139QMB gearbox. Engine code alone does not establish fitment.

Inspect the mating gears, bearings, seals, and wheel-hub splines during replacement. Assemble and refill the gearbox according to the vehicle manufacturer's service instructions.

Product Diagrams

• GO MAX GEAR BOX Callout 13
• QMB139 GEAR BOX Callout 13