LEIMO KPARTS Starter Motor for 50cc–125cc ATVs & Pit Bikes — 3-Bolt, 12-Tooth Clockwise Replacement

LEIMO KPARTS 3-bolt electric starter motor is a direct-fit replacement for most Chinese-made 50cc–125cc ATVs, pit bikes, dirt bikes and go-karts, delivering reliable cranking power and simple bolt-on installation.

When a worn or failed starter leaves your small engine immobile, this LEIMO KPARTS universal starter offers a cost-effective swap that mirrors OEM mounting and performance. Built with a 12-tooth gear, clockwise rotation and three mounting holes, the unit is engineered to match common TaoTao, SSR, Roketa, Coolster and similar models so you can get back on the trail quickly without modifying the crankcase or starter housing.

Will this starter fit my 50cc–125cc ATV or pit bike?

The starter is designed to be a universal 3-bolt replacement for many Chinese-manufactured small-displacement engines. Check the bolt spacing and rotation to confirm fit before purchase; it’s supplied with common bolt hole spacings to match popular models.

• Bolt Hole A spacing: 2.85" (measured center-to-center)
• Bolt Hole B spacing: 3.16" (measured center-to-center)
• 12-tooth pinion gear with clockwise rotation
• Intended for 50cc, 70cc, 90cc, 100cc, 110cc and 125cc engines

How difficult is installation and what tools do I need?

Installation is straightforward for most mechanically-inclined riders: remove the side engine cover, unbolt the old starter, swap electrical connections, and mount the new unit. No fluids are involved, and the process typically requires common hand tools and minimal time.

• Basic socket set and wrench (metric sizes recommended)
• Small pick or screwdriver to detach electrical terminals
• Torque to manufacturer spec for the three mounting bolts
• No need to drain engine fluids or remove major components

What performance and durability can I expect?

This aftermarket starter is built to match OEM output and is bench-tested for consistent operation. Components such as armature, brushes and rotor are assembled to provide dependable cranking cycles and a long service life under normal riding conditions.

• 12-tooth gearing for proper engagement with common flywheels
• Rated for thousands of reliable start cycles in typical use
• Constructed with durable electrical and mechanical components
• Backed by a 1-year warranty for manufacturing defects

Does this replace an OEM number or require modifications?

The unit is an OE-comparable aftermarket replacement designed to fit most original starter setups without modification. In rare cases where bolt spacing or pinion teeth differ, minor adjustments or a different starter model may be required.

• Matches common OEM configuration and power output ratings
• Direct bolt-on for compatible 3-bolt applications
• 100% tested for reliability prior to shipping
• Contact customer service if uncertain about fitment

Who is this for: Riders, mechanics and DIYers who own Chinese-manufactured ATVs, pit bikes, dirt bikes, dune buggies or go-karts with 50–125cc engines and need a dependable, affordable starter replacement. It’s ideal for those who want an easy, bolt-on swap that restores electric start capability without expensive dealer repairs. If you’re replacing a worn starter or upgrading a marginal unit, this LEIMO KPARTS 3-bolt starter offers a practical balance of compatibility, durability and value.