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Top End Piston Kit 12:1 Compression - 89.00mm Bore (STD)


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  • SKU: PK1447
  • Manufacturer: Wiseco


  • Bore - Actual: 89.00mm
  • Bore - Oversize: STD
  • Compression Ratio - Actual: 12:1
  • Displacement: 450cc
  • Stroke: 72.00mm
  • UPC: 193564154231
    Includes The Following Components
  • 4942M08900 - KTM 450EXC '03-07; XC ATV '08-09 12:1 CR
  • 8900ZC - 89.00 mm Ring Set
  • Ring - Set
  • S641 - PistonPin 20mm x 1.986" NonChromed SW
  • W5509 - 20mm Round Wire Locks - Set of Two
  • W5883 - TopEnd Gasket Kit KTM/ Pol 400/ 450cc

  • Top End kit includes: piston, rings, wrist pin, clips, top end bearing (2 strokes), and gasket kit
  • Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Supercross, Motocross, GNCC, Superbike, and more
  • Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy
  • High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power
Wiseco's complete top end Piston Kits are offered for nearly every popular motorcycle application. These kits contain everything you need to complete your rebuild the right way, the first time. High quality parts specifically chosen by us to match our forged pistons are included in this kit for easy one stop shopping.

This part fits the following

ATV / SxSKTM450 XC ATV20084501
ATV / SxSKTM450 XC ATV20094501
MotorcycleKTM450 EXC20034501
MotorcycleKTM450 EXC20044501
MotorcycleKTM450 EXC20054501
MotorcycleKTM450 MXC20034501
MotorcycleKTM450 MXC20044501
MotorcycleKTM450 MXC20054501
MotorcycleKTM450 XC-W20074491

This product was added to our catalog on Tuesday 18 August, 2020.

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