Hoca 63mm Grom Replacement Piston Kit

Hoca 63mm 4-Stroke Big Bore Cylinder Kit for the Honda Grom 125. Takes your stock 52.4mm cylinder and upgrades you to 180cc with a 63mm cylinder! Includes cylinder, piston, pin, rings, circlips, head gasket, 2 base gaskets and oil fittings.***Does not include or come with tuning parts/additional fueling. It is highly recommended that you look into performance tuning options like the Power Commander V!*You will need to modify your engine case to accommodate the larger cylinder. Please see our Warranty & Returns Policy. Specs:

• Upgrades to 180cc!
• Bore: 63mm
• Overall Height (cylinder): 90.3mm
• Wrist Pin Diameter: 13mm
• Wrist Pin Length: 46mm
• Head Gasket Thickness: 0.3mm
• Base Gasket Thickness: 0.5mm & 1.10mm
• Made in Taiwan