"Fitment：For Predator 212cc Engines Go Kart Mini Bike. Package Includes:1*Connecting Rod(3.308"")With Bearings. The billet connecting rod connects the piston and crankshaft to make the engine run more smoothly. Installation precautions: tighten the bolt three times, do not over-tighten at one time, to avoid loosening the bolt. Normally, the Rod bolt torque can be more than 150 inches/lbs.The rod bolts use 12 corner 1/4 socket."