KITACO LIGHT Big Bore Kit 164cc Aluminum Cast Iron Sleeve Cylinder for CT125 Hunter Cub Monkey 125 Grom (Black) (JA55), (JB02), (JC61/JC75)

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Compatible models: Grom: JC61/JC75 | Monkey 125: JB02 | CT125 Hunter Cub: JA55 Aluminum cast iron sleeve cylinder (black) Displacement: 164cc | Bore Diameter: φ60 | 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.