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CP or JE forged big bore pistons**
FITS ALL YFZ450R/X MODELS - ALL 06-09 YZ450F MODELS
and maximize engine longevity for aggressive dune riding
Designed for riders looking for a substantial increase in horsepower
The OEM Honda cylinder plated by Millennium Technologies offers unmatched reliability and durability
Polaris RZR RS1 Cylinder Kibblewhite Valve Spring Kit Wiseco Top End Rebuild Kit WR400F CP or JE forged bigPolaris RZR RS1 Cylinder Kibblewhite Valve Spring Kit Wiseco Top End Rebuild Kit Polaris RZR RS1 Cylinder Kibblewhite Valve Spring Kit Wiseco Top End Rebuild Kit 82 83950, 82 83220, 82 82550, C3563, C3546, 3022594, 2205244, 71048, 71048 8, 82 82362, 82 82612, 82 82616, 3022134, 3022415, 60003, 3222196, 2205244, 3023156, 810969, 3022594, 3022523,2204949, 2205245, 5253037, 2205244, 2204948, 3022567, 5813737, 5814793, 3022413, 2205244, 3022413, 2204949,