Motorcycle cylinder kit including piston, ring, gasket set, and cylinder for models with 76mm bore.Includes cylinder lower pad, cylinder head gasket, cylinder head cover gasket, piston, piston rings, circlip, piston pin, and cylinder.OEM part numbers: Cylinder lower pad: 12191-K87-A30 Cylinder head gasket: 12251-KYJ-901 Cylinder head cover gasket: 12391-KYJ-901 Piston: 13101-K33-D00 Piston ring: 13011-KZZ-D20 Circlip: 13112-K33-D00 Piston pin: 13111-MEL-000 Cylinder: 12100-K33-950 Compatible with: CB300F (2015–2018) CRF300L, CRF300L ABS, CRF300 RALLY, CRF300 RALLY ABS (2021–2022) CB300RA (2019–2022) CBR300R and CBR300RA (2015–2022) CMX300 (2017–2022) This product is a third-party replacement.Any use of brand names or model designations is purely to indicate compatibility.