16-18 Yamaha WR450F WR 450F 99mm 470cc Big Bore CP Carrillo 13.5:1 CP Piston Kit KX80 known as some of the

known as some of the best-performing valve stem seals available for high-performance four-stroke engines

To complete the package

Hot Rods Part # 4423

YZ450F (2008–2017)

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16-18 Yamaha WR450F WR 450F 99mm 470cc Big Bore CP Carrillo 13.5:1 CP Piston Kit KX80 known as some of theMX1068, MX1069, MX1070, MX1P70, MX1070, 01. 2444. A, 21005 K02, 21005 G01, 21005 G02, 23655, 291510, 324911, 324913, 324914, 40001M09700, 40002M09700, 40111M09700, 40121M09700, 20005, 20005 K01, C3395,33D 116A0 00 00, 33D 11631 00 00, 333D 11603 00 00, 33D 11633 00 00, 93450 19052 00 BPRATV CP Carrillo Custom Piston Kit '16 18 Yamaha YZ450FX and WR450F 13. 5: 1 99mm Big Bore 470cc Piston Kit FITS ALL 2016 2018 99mm Big Bore Cylinders Including: