Shin Yea
Shin Yea High Torque Starter Motor - GY6 150-232cc
Expected back in stock: Nov 2, 2026
Description
This Shin Yea Extreme High Torque Starter Motor is built for modified GY6 125/150cc engines (152QMI and 157QMJ, based on the Honda GY6 design) running 150cc up to 232cc. If you've installed a big-bore kit, stroker crank or high-compression head and your stock starter groans, clicks or just can't spin the engine over, this high torque starter gives your build the extra cranking force it needs to fire up reliably.
Key Features
- High torque output: Made to turn over 170cc, 180cc, 212cc and 232cc GY6 builds with higher cylinder pressure.
- GY6 bolt-on fit: Two-ear mounting plate with 78mm bolt spacing fits 152QMI and 157QMJ short and long case engines.
- 9-spline shaft: 11.5mm splined shaft engages the stock starter clutch / bendix.
- Sealed nose: Rubber O-ring seal at the 30mm nose.
- Taiwan-made: Shin Yea Racing Team branded starter.
Technical Specifications
- Part number: 169-579
- Bolt hole spacing: 78mm
- Splined shaft: 18mm length / 11.5mm diameter
- Spline count: 9
- Nose diameter: 30mm (at rubber seal)
- Engine fitment: GY6 125/150cc, short and long case
- Country of origin: Taiwan
- Brand: Shin Yea
Compatibility
| Engine Code | Platform | Displacement |
|---|---|---|
| 152QMI | GY6 125cc (based on the Honda GY6 design) | 125cc stock, modified builds up to 232cc |
| 157QMJ | GY6 150cc (based on the Honda GY6 design) | 150cc stock, modified builds up to 232cc |
Fits short case and long case GY6 engines. Check the engine code stamped on your engine case before ordering.
Installation Notes
This starter draws much more current than a stock motor. To avoid burning out the brushes or the starter relay, upgrade your electrical system before installing:
- Battery: 9Ah minimum. A stock 4Ah or 7Ah battery isn't enough.
- Wiring: Upgrade to 6- or 8-gauge starter and relay cables. Stock 12-gauge wire is too small.
- Ground: Run a dedicated heavy-duty ground to the engine case.
- Starter clutch: Check your starter bendix for chipped or worn teeth. A high-torque motor will quickly chew up a worn bendix.
Product Diagrams
Features
Specifications
Part Number: 169-579 | Bolt Spacing: 78mm | Shaft: 18mm L x 11.5mm dia | Splines: 9 | Nose: 30mm | Fits: GY6 short & long case | Requires 9Ah+ battery, 6-8 ga cables | Made in Taiwan | Brand: Shin Yea
Model Fitments
GY6 152QMI 125cc and 157QMJ 150cc (short and long case), stock or modified up to 232cc
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
