GY6 Performance Engines




GY6 150cc QMJ157 Engine
Complete Gy6 150cc engine, excluding the carburetor.
This engine is available in short or long block.


QMJ157 150cc




Velocita Performance 178cc Engine
178cc (62mm)
Long or Short Case
We at build these performance engines in our own shop. We build them as you want them.
The motor will have a 62mm Cylinder kit with ceramic coated piston, and a large valve big bore cylinder head. 


QMJ157 178cc (62mm)

Standard features are:
63mm Cylinder Kit
Big Bore Cylinder Head
8 Pole Stator & Fly Wheel
OEM Starter Motor


Additional shipping charges apply to complete engines.