Lower Scooter Starter Motor for 49cc - 125cc 4-Stroke

Lower Starter Motor for 49cc - 125cc 4-Stroke Engines

This lower-mount starter motor is built to deliver dependable starting for a range of small off-road vehicles that use horizontal 4-stroke engines. It works as a straight swap for a worn or failed starter, so it lines up correctly and delivers steady cranking power. You can also browse our scooter starters and relays if you need related parts to get your vehicle starting again.

Drop-In Replacement Design

This starter is made for lower-mount setups and sits beneath the engine block or carburetor. Its factory bolt-hole spacing means it bolts into place without any alterations, which makes it a practical option for home mechanics.

12-Tooth Drive Sprocket for Secure Engagement

The 12-tooth drive sprocket meshes firmly with the starter chain or flywheel arrangement. Inside, the windings use high-grade copper wire and long-lasting brushes, supporting reliable cold starts and steady cranking force.

Specifications

• Position: Lower (underneath carburetor/crankcase)
• Bolt Hole Spacing: 68mm center-to-center
• Drive Gear Teeth: 12
• Internal Splines: 22
• Operating Voltage: 12V DC
• OEM Part Number: 877
• Fits: Chinese 49cc-125cc horizontal 4-stroke pit bikes, youth dirt bikes, go-karts

Fitment

Fits:

• TaoTao, Coolster, SSR, Apollo, Roketa and Kazuma pit bikes, youth dirt bikes, go-karts and ATVs (lower-mount starter only)
• Engines 49cc / 50cc, 70cc / 90cc and 110cc / 125cc (4-stroke, horizontal)

How to choose: Compare the 68mm bolt-hole spacing and the 12-tooth drive gear against your existing starter, and confirm that the new unit mounts beneath the carburetor/crankcase.

Shop more: Scooter Starters and Relays · Electric Scooter Hub Motors and Controllers · Scooter Parts