SSP-G 52mm QMB139 Big Bore Cylinder and Head Kit

SSP-G QMB139 52mm Performance Cylinder and Head Kit. Includes cylinder, piston, piston rings, wrist pin, cir clips, complete cylinder head with 64mm valves, exhaust gasket, intake gasket, and cam chain tensioner gasket.When used in conjunction with your stock crankshaft the displacement comes out to 88cc.Please see our Warranty & Returns Policy. Upgrades to 88cc Cylinder Bore: 52mm Cylinder Sleeve Outer Diameter: 54.9mm Intake Valve Diameter: 23.5mm Intake Port Diameter: 21.5mm Exhaust Valve Diameter: 20.1mm Exhaust Port Diameter: 19mm Valve Length: 62.3mm (compatible with 64mm Short Valve Style Heads)  Does not come with camshaft, please see Related Items Made in Taiwan