Kazuma ATV Engine, GY6 150cc -- Guaranteed Fit

YOU HAVE PERFORMANCE OPTIONS WITH THIS ENGINE--SEE BELOW This is the 150cc GY6 engine for Kazuma ATV--Guaranteed Fit!  Your engine comes with an American made Uni-Filter, which is a high performance filter that ensures clean air to your engine, and also get 4 sets of roller weights.  If you are buying a new engine there is a good chance that your old one failed from a poor air filter. Also included: Standoff for muffler.  No kick start to interfere with your exhaust! Longer drive shaft to accommodate a reverse gear box but will work without a gear box also.  New American made Uni-Filter for clean air to your engine.  See why a NEW Uni-Filter is MANDATORY for ALL new engines.  Don't get an engine without one.  Four sets of roller weights for you to optimize top end speed and low end torque of your vehicle (9g, 10g, 12g and 14grams) OPTION 2: Performance Transmission plus Option 1: High Performance Transmission for Better Power Transfer to the Wheels: This option inc