Your cart
There are no more items in your cart Big bore cylinder kit for Yamaha BWS125 5ML engine upgrade. This set supplied with cylinder, 69mm forged JCC piston, pin 15mm, gasket and clips. For installation this kit you need to bore crankcase and use it with long stroke crankshaft +6mm and big valves cylinder head EX23/IN25. You need to ask the professional mechanic to install this cylinder for you.