Wiseco’s forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength
Designed for riders looking for a substantial increase in horsepower
FITS ALL YFZ450R/X MODELS - ALL 06-09 YZ450F MODELS
The OEM Honda cylinder plated by Millennium Technologies offers unmatched reliability and durability
5:1 Pump Gas Piston
Polaris RZR RS1 Cylinder Kibblewhite Valve Spring Kit Wiseco Top End Rebuild Kit WR400F Wiseco’s forged 4-stroke pistons arePolaris 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,