Hoca High Performance A9 Camshaft for 125cc – 150cc GY6 ATVs, Go Karts, and ScootersSPECIFICATIONS: Intake – 26.90MMExhaust – 25.78MM34 TeethBearing 16002C3Beef up your power with racing camshaft. This camshaft is the most popular camshaft used when doing upgrades for power take off.Great addition when upgrading cylinder and large valve head for best results.**NOTE: Electrical, High Performance, Aftermarket items are non-returnable, please check photos and specifications before ordering. Please see our Warranty and Returns Policy