KB Performance Motorcycle Pistons PISTON KIT M8 117" +020 - KB542LCA.020

Super Duty Series includes:. Anodized top ring groove and crown. Line2Line abradable skirt coating applied to .003" total thickness for a zero initial fit to allow coating to hone in for a tight quiet running clearance. Round wire locks. Steel nitride top ring with a Ductile Napier second. Forced wrist pin oiling. Flat Top 1.2cc. Compression Height 1.083". Factory 117" Cylinders can safely be bored to 4.125" through 4.165". Valve pockets sized to accommodate 1mm oversize valves.