KOSO Honda Grom/Monkey 61mm 4V Replacement Piston Kit Buzzetti This Big Bore for the

This Big Bore for the 2002-2009 Yamaha Zuma 50 2-Stroke will require a few modifications for a better running vehicle

1 Thick Base Gasket (Low Compression)

brake pads

Honda Ruckus with Zuma Clutch and Rear Pulley

The Cush Drive Damper is designed to reduce stress on the engine torque

KOSO Honda Grom/Monkey 61mm 4V Replacement Piston Kit Buzzetti This Big Bore for theKOSO's 4V Piston Kit for the Honda Grom Monkey is a complete piston to be installed in a cylinder kit that fits 4V Cylinder Heads. This is a forged piston that measures 61mm and includes a piston, pin, pin clips, and a set of rings. These are completely forged pistons and is highly prefered over cast pistons. The reason is cast pistons are made up of brittle content, over the much more stout forged piston. Although forged pistons are heavier, it makes