GY6 Crankshaft (Complete)
ITEM# TT-26867
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Description
Full Crankshaft for GY6 125cc/150cc Engines
This crankshaft is a direct OEM-style replacement for GY6 125cc and 150cc scooter engines. It is built for simple fitting and plays a key role in keeping the engine running properly. It belongs to the range of GY6 scooter parts that can help bring back your scooter's power and efficiency. It suits riders who need a dependable option when original parts are hard to find or expensive.
Key Features
The crankshaft comes with main bearings and is made for specific engine applications. Its stroke is 57.8mm, which supports solid performance in your scooter. Overall length is 285mm, and both the flywheel and drive end use M12x1.25 threads. The piston, pin and circlips are not included, but they are easy to find online.
When to Replace Your Crankshaft
You may need a new crankshaft if the engine starts to lose performance or develops unusual vibration. A worn or damaged crankshaft can reduce power and efficiency. If you are rebuilding the engine or swapping other internal parts, it is a good time to consider replacing the crankshaft as well.
Specifications
- Stroke: 57.8mm
- Overall Length: 285mm
- Flywheel Thread Size: M12x1.25
- Flywheel Thread Length: 14mm
- Drive End Thread Size: M12x1.25
- Drive End Thread Length: 14mm
- Inner Diameter (Piston Pin Hole): 15mm
- Number of Splines: 19
- Main Bearings: Included
- Fits: GY6 150cc (157QMJ) 157QMJ-based 125cc/150cc/169cc GY6 engines by engine code
Fitment
Fits:
- GY6 150cc (157QMJ) (157QMJ-based engines: 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, other QMJ/QMK/QMI, and any engine code with QM or FM)
How to choose: Compare your engine code with the list above. Codes that contain "QM" or "FM" are shown as compatible. The piston, pin and circlips are sold separately.
Where it goes: part #1 on the crankshaft and piston diagram for the GY6 150cc (157QMJ).
Shop more: GY6 Scooter Parts · Chinese Scooter Parts · Scooter Engines & Engine Parts · Scooter Parts
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