Rovira Motorcycle Branded 63mm Big Bore COMBO Kit with a forged piston for the GY6 150cc 157QMJ engines. BORING OF THE ENGINE CASE IS REQUIRED. Also, this kit will not fit any go kart, or ATV regardless if it has a GY6 in it. Cylinder, FORGED Piston, Piston Rings, Piston Clips, Rod and Gaskets.

63mm Taiwan Made Valve Head with 30.5/26.5mm valves. Taiwan Made Camshaft. Includes Gaskets, Studs, Bolts, Spark Plug. 

54mm stud spacing

BORING IS REQUIRED

MADE IN TAIWAN BY SHENGEE. 

 

PROFESSIONIAL INSTALLATION HIGHLY RECOMMENDED. 

ITEM IS SHIPPED VIA USPS PRIORITY. RETURNS ARE ONLY ACCEPTED IF THE PRODUCT IS UNINSTALLED, AND ALL BOXES, PACKAGING MUST BE IN ITS ORIGINAL CLEAN CONDITION. IF ANYTHING IS COVERED IN GREASE OR OIL WE WILL DEDUCT 50% FROM THE REFUND.