Kick Start Gear Shaft Assembly Kit for GY6 50cc 60cc 80cc 139QMB Scooter Moped

Product Overview

Restore your scooter's manual starting power with this Complete Kick Start Gear Shaft Kit. Specifically designed for the small-case GY6 4-stroke engine family (50cc–80cc), this kit replaces worn or stripped gears that cause the kick pedal to slip or jam. Featuring a precision-cut 7-tooth gear and a high-strength spline shaft, this assembly is engineered for durability and ease of use. Whether your battery is dead or you prefer a manual start, this high-quality combination ensures a smooth, reliable engagement every time you kick the pedal.

Product Compatibility

Component Type	Specification
Engine Type	GY6 4-Stroke (139QMB / 1P39QMB)
Engine Displacement	50cc, 60cc, 80cc
Vehicle Types	Scooters, Mopeds, Mini-Bikes
Common Brands	TaoTao, Peace Sports, Ice Bear, Wolf, VIP, Roketa, Jonway
Fitment Note	Specifically for 7-tooth starter systems

Specifications

Feature	Details
Shaft Length	65mm (2.56")
Spline Diameter	14mm (0.55")
Gear Tooth Count	7-Tooth
Material	Heavy-Duty Hardened Steel Alloy
Condition	100% Brand New Combination Kit

Key Features

• Precision 7-Tooth Design: Engineered specifically for the GY6 139QMB engine, the 7-tooth gear ensures a perfect mesh with the kickstart idle gear, preventing slipping and reducing wear on internal components.
• Hardened Steel Construction: Manufactured from high-quality, impact-resistant materials designed to withstand the sudden force of manual kicking without bending or shearing the splines.
• Optimized Shaft Dimensions: With a 65mm length and 14mm spline diameter, this shaft provides a precise fit for standard 50cc scooter crankcase covers, ensuring "lossless" installation.
• Smooth Engagement: The brand-new gear combination is designed to reduce friction and resistance, making it easier for riders to start their motor with minimal effort.
• Complete Starting Solution: This kit replaces the most common failure point in the manual start system, providing a durable alternative to stock components that have succumbed to metal fatigue.