16-18 Yamaha WR450F WR 450F 99mm 470cc Big Bore Cylinder Works 13.5:1 CP Piston YFM350 **Products we sell: At bpracingatv

**Products we sell: At bpracingatv our kits come with the same brand name parts (in many cases they are better) as other rebuild kits you see online but we always include items no one else does to make sure you get as complete of an order as possible

Is it stronger than Chromoly

YZ 450 F (03-22)

All bearings OEM quality of better for less

Kibblewhite’s superior one-piece valve design for increased strength and durability

16-18 Yamaha WR450F WR 450F 99mm 470cc Big Bore Cylinder Works 13.5:1 CP Piston YFM350 **Products we sell: At bpracingatvMX1068, 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: