im doing one that will be street legal
I'm using a 31cc 4stroke honda clone in the stock motors position. I put on a freewheel, beefier rims, bmx front brakes, good tires and grip tape on the deck. With 1.95-2.2 hp and 6500 RPM, 12.5 in tires, 6 tooth pinion gear, 81 tooth drive gear. Ill let u all know what kind of top speed I hit when its all together. Um im pretty sure the forks are backwards on your beast there LOL. I got a spare set of those rims if u bend yours with that heavy motor.