premium short block 150cc 4-Stroke long-case GY6 gas engine with automatic CVT transmission. Builder's special! Add top end of your choice.

This is the short block (no cylinder or head) version of our top of the line aftermarket replacement GY6 engine.

This scooter engine is used in a wide variety of applications, including full-size street legal scooters, all terrain vehicles (ATVs), dirt bikes, and go karts. Compatible with both 125cc and 150cc engine size scooters and vehicles.

This partial engine includes stator, flywheel, cooling fan, electric starter, kick start, and CVT.
Please Read The Following Important Notices:
This engine is shipped dry. DO NOT RUN ENGINE WITHOUT ADDING OIL.
 
Check oil level after letting the engine idle for a few minutes, add additional oil if needed.
 
GY6 125cc and 150cc engines come in different sizes. Please measure the physical size of your engine and compare to our specifications before ordering. The difference is in the length of the rear swing arm. Different lengths have been made to accommodate different wheel sizes.
 
Set Up For Drum Brakes.
 
This Engine Only Ships to the Continental U.S.