SSP-G 50mm QMB139 Big Bore Cylinder and Head Kit

SSP-G QMB139 50mm 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 82cc. Please note: replaces Cylinder Heads with 64mm Valves (Short Valve Style). Please see Related Items if you need 64mm rocker arms. Please see our Warranty & Returns Policy.
Upgrades to 82cc
Cylinder Bore: 50mm
Cylinder Sleeve Outer Diameter: 54.9mm Intake Valve Diameter: 23.5mm
Intake Port Diameter: 20.8mm
Exhaust Valve Diameter: 20.1mm
Exhaust Port Diameter: 18.8mm
Valve Length: 62.3mm (compatible with 64mm Short Valve Style Heads) Does not come with camshaft, please see Related Items
Made in Taiwan
SUPPORTED MODELS: QMB139 50cc/49cc