RELIABILITY: Manufactured to meet or exceed original equipment manufacturer (OEM) specifications for maximum durability and direct-fit installation.

Key Features

• ✔ Direct fit for GY6 50cc 4-stroke engines
• ✔ High-torque permanent magnet design
• ✔ Precise 10-tooth drive gear
• ✔ Weather-sealed for long-term use

Technical Specs

Voltage	12V
Rotation	CCW (Counter-Clockwise)
Tooth Count	10 Teeth
Type	PMDD
Spline OD	7mm

Make / System	Model / Application	Notes
BMS Motorsports	Apache 50cc	2008 Models
BMS Motorsports	Pinnacle 50cc	2008 Models
BMS Motorsports	Romans 50cc	2010 Models
BMS Motorsports	Heritage / Robot / Zip	50cc Variants
Arctic Cat	90 Youth 4-Stroke	2004-2005 (89cc)
Chinese GY6	139QMB / 139QMA Engines	Fits most 50cc-80cc engines

Is this a genuine original part?

This is a premium quality 4Drive aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.

How do I know if it is compatible?

Please check your original unit's tooth count. This model features 10 teeth and is specifically for the 50cc GY6 139QMB engine platform. If your scooter is one of the BMS models listed (Apache, Pinnacle, Romans), it is a guaranteed fit.

What rotation does this starter use?

This starter motor operates with a CCW (Counter-Clockwise) rotation, which is standard for the 139QMB engine layout used in these scooters.