EOPOAYI 3-Bolt Starter Motor Kit for 50–125cc ATVs & Dirt Bikes — Includes Solenoid, CDI & Spark Plug

If your small-displacement ATV or dirt bike won't crank, this all-in-one kit includes the starter motor, solenoid relay, CDI, spark plug and mounting hardware so you can swap components without fabricating parts. Built to the common three-bolt mounting pattern used by many TaoTao, Coolster, SSR, Roketa, Kazuma and Vitacci models, the unit is a direct-fit for a wide range of 50cc–125cc 4-stroke engines. The parts are metal-bodied and tested for long life, and the kit is supplied with the fasteners and wrench you need for a straightforward replacement.

Will this starter motor fit my ATV or go-kart model?

Compatibility centers on the 3-bolt mounting pattern and the small 4-stroke engine family common to many Chinese manufacturers. Confirm your vehicle uses a 3-bolt starter flange; the kit lists many compatible model families such as TaoTao 110/125 and Coolster 110/125. If your machine uses a 2-bolt starter pattern, this product is not compatible.

• Designed for 50cc–125cc Chinese 4-stroke ATVs, pit bikes, and go-karts
• Direct-fit for TaoTao, Coolster, SSR, Roketa, Kazuma, Vitacci and similar
• Requires a 3-bolt mounting pattern—verify before ordering
• Check model numbers (ATA-110B, 3050A, etc.) against your OEM part

What parts are included and why does that matter?

The kit ships with the starter motor, a starter solenoid relay, a CDI box, a spark plug, three mounting screws and a wrench. Having these parts together means you can replace multiple failing components at once—useful when diagnosing intermittent starting problems or refreshing an older machine.

• Starter motor: metal construction for reliable cranking power
• Solenoid relay: engages the starter when you press the ignition
• CDI box and spark plug: address ignition issues during replacement
• Includes screws and wrench for a ready-to-install package

How difficult is installation and what tools are needed?

Installation is intended to be user-friendly for home mechanics familiar with small engines. The starter uses a three-bolt flange and connects with standard electrical terminals; the included screws and wrench cover the basic hardware. No drilling or custom mounting is required if your vehicle already uses a 3-bolt pattern.

• Basic hand tools (socket or wrench set) plus the supplied wrench
• Disconnect battery before removal to avoid shorts
• Swap the solenoid and CDI if your fault diagnosis includes ignition
• Expect a 30–90 minute replacement time for most small ATVs

Who this is for: This EOPOAYI kit is intended for owners and mechanics of small-displacement Chinese 4-stroke ATVs, quad bikes, go-karts, and pit bikes who need a reliable, direct-replacement starter solution. It's especially useful for those troubleshooting recurrent starting failures or performing a budget-friendly refresh on older machines that share the common 3-bolt starter pattern. If you are unsure about mounting pattern compatibility, inspect your existing starter or consult your vehicle's service information before purchasing.