150cc Short Case 4 Stroke GY6 Engine with Automatic Transmission Build-in Reverse for 110cc 125cc 150cc ATV and Go Kart 3150DX2 3150CXC Bull 150 ATA-150G
[308-999016]

got this 150 to replace my 125 that crapped out. plus got a few other high performance parts to go on it. so far its gotten up to 63mph, waiting on a better carb. the factory carb that comes with it junked out on me the first day. waiting on my 170cc big bore kit to slap on this puppy, ill let u know how it turns out.