KITACO LIGHT Big Bore Kit 181cc Aluminum Cast Iron Sleeve Cylinder for CT125 Hunter Cub Monkey 125 Grom (Black) (JA55), (JB02), (JC61/JC75)

Compatible models: Grom: JC61/JC75 | Monkey 125: JB02 | CT125 Hunter Cub: JA55 Aluminum cast iron sleeve cylinder (black) Displacement: 181cc | Bore Diameter: φ63 | Stroke: 57.9mm (normal) | Piston: Cast (3R) specification Compression ratio: 11.1:1 | Unleaded premium gasoline specification This is a bore-up kit that allows you to use the standard cylinder head as is.