GY6 Kickstart Quadrant / Spindle Assembly

GY6 Kickstart Quadrant / Spindle Assembly. The starter motor and relay turn your engine over when you press the button. Built to fit GY6. Shop more GY6 Scooter Parts and Scooter Starters & Relays.

A click with no crank usually means a bad relay or battery; a whine with no crank points to the starter clutch.

Product details

Restore smooth, reliable manual starting to your scooter's transmission layout with the premium GY6 Kickstart Spindle Quadrant Assembly. Built to replace worn, stripped, or chipped gear teeth, this high-strength steel quadrant ensures dependable engagement with your kickstart shaft mechanisms to get your engine running without electrical power.

Key Features

• High-Tensile Steel Construction: Forged and heat-treated to withstand repeated impact forces and resist tooth shearing under high-compression starting loads.
• Precision Machine-Cut Splines: Engineered to match factory gear teeth profiles perfectly, minimizing mechanical slip and preventing wear on companion starter gears.
• Complete Pivot Assembly: Built to structural OEM tolerances to deliver fluid, non-binding return-spring action during manual crank cycles.

Vehicle & Engine Fitment

This replacement kickstart shaft assembly is designed specifically for standard 4-stroke GY6 displacements. Review engine family compatibility below:

• GY6 125cc / 150cc / 169cc: 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, and alternative QMJ, QMK, or QMI structures.

Technical Specifications

• Overall Length: 158mm (Approximately 6.25 Inches)
• Fitment Application: 125cc to 150cc 4-Stroke GY6 Platforms
• Manufacturer Part Number (MPN): 164-44
• Component Classification: Kickstart Spindle / Gear Quadrant

Mechanic's Installation Tip: When installing a fresh quadrant, apply a generous coating of high-temp lithium grease to the gear teeth and pivot pin before sealing the CVT case. Make sure your kickstart return spring is correctly pre-tensioned and anchored into its case seat — if the spring isn't seated right, your kick lever will hang loose instead of snapping back up after a kick.

Specifications

• Fits: GY6
• Part type: Starters & Relays
• Condition: New

Fitment check

Compare this part with your original before ordering: match the size, connector or part number, and the position on your scooter. Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm.

Shop more: GY6 Scooter Parts · Scooter Starters & Relays · Scooter Parts