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Wiseco Top-End Rebuild Kit for Yamaha YZ250F / WR250F - 77.00mm - PK1401

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Wiseco Top-End Rebuild Kit for Yamaha YZ250F / WR250F - 77.00mm - PK1401

Wiseco Performance Top End Rebuild Kit

Part Number: PK1401 
Piston Size: 77.00mm

  • These kits contain everything you need to complete your rebuild the right way, the first time
  • High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power
  • Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy
  • All Piston Kits are precision crafted and forged in the USA

Wiseco's complete Top-End Piston Kits are offered for nearly every popular application in the powersports market. 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. 2-stroke kits feature our Pro-Lite pistons that are CNC machined for optimal cam shape and profile for peak HP and service life. 4-stroke kits feature a ‘race-ready’ dome finish with smooth edges for improved combustion flow. Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal. 4-stroke race applications feature Wiseco’s Armor Glide skirt coating to provide reduced friction and noise to contribute to increased horsepower. Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Super-cross, Motocross, GNCC, Super-bike, and more.

  • Displacement: 250cc
  • Piston Standard Bore: 77.00mm
  • Oversize Bore: 0.00mm
  • Stroke: 53.6mm
  • Compression Ratio: 12.5 : 1
Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Top-End Rebuild Kit
Part Number PK1401
Fitment Type
Unit Sale Qty Each
Style Nikasil Bore
Material
Color
Size
Finish
Position
Functional Length
Cable Sleeve Length
Cable Sleeve Travel
Driver Seat Length
Passenger Seat Length
Driver Seat Width
Passenger Seat Width
Piston/Cylinder Size 77.00mm
Piston Size Added 0.00mm
Cylinder Stroke Volume 53.60mm
Final Engine Displacement 250cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
Ca ARB Compliance Non CARB Complaint CARB Compliant
Product Disclaimer

2011 Yamaha WR250F
2010 Yamaha WR250F
2009 Yamaha WR250F
2008 Yamaha WR250F
2007 Yamaha WR250F
2006 Yamaha WR250F
2005 Yamaha WR250F
2007 Yamaha YZ250F
2006 Yamaha YZ250F
2005 Yamaha YZ250F

Wiseco Performance Top End Rebuild Kit

Part Number: PK1401 
Piston Size: 77.00mm

  • These kits contain everything you need to complete your rebuild the right way, the first time
  • High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power
  • Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy
  • All Piston Kits are precision crafted and forged in the USA

Wiseco's complete Top-End Piston Kits are offered for nearly every popular application in the powersports market. 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. 2-stroke kits feature our Pro-Lite pistons that are CNC machined for optimal cam shape and profile for peak HP and service life. 4-stroke kits feature a ‘race-ready’ dome finish with smooth edges for improved combustion flow. Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal. 4-stroke race applications feature Wiseco’s Armor Glide skirt coating to provide reduced friction and noise to contribute to increased horsepower. Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Super-cross, Motocross, GNCC, Super-bike, and more.

  • Displacement: 250cc
  • Piston Standard Bore: 77.00mm
  • Oversize Bore: 0.00mm
  • Stroke: 53.6mm
  • Compression Ratio: 12.5 : 1
Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Top-End Rebuild Kit
Part Number PK1401
Fitment Type
Unit Sale Qty Each
Style Nikasil Bore
Material
Color
Size
Finish
Position
Functional Length
Cable Sleeve Length
Cable Sleeve Travel
Driver Seat Length
Passenger Seat Length
Driver Seat Width
Passenger Seat Width
Piston/Cylinder Size 77.00mm
Piston Size Added 0.00mm
Cylinder Stroke Volume 53.60mm
Final Engine Displacement 250cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
Ca ARB Compliance Non CARB Complaint CARB Compliant
Product Disclaimer

2011 Yamaha WR250F
2010 Yamaha WR250F
2009 Yamaha WR250F
2008 Yamaha WR250F
2007 Yamaha WR250F
2006 Yamaha WR250F
2005 Yamaha WR250F
2007 Yamaha YZ250F
2006 Yamaha YZ250F
2005 Yamaha YZ250F

$269.99
Wiseco Top-End Rebuild Kit for Yamaha YZ250F / WR250F - 77.00mm - PK1401
$269.99

Description

Wiseco Performance Top End Rebuild Kit

Part Number: PK1401 
Piston Size: 77.00mm

  • These kits contain everything you need to complete your rebuild the right way, the first time
  • High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power
  • Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy
  • All Piston Kits are precision crafted and forged in the USA

Wiseco's complete Top-End Piston Kits are offered for nearly every popular application in the powersports market. 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. 2-stroke kits feature our Pro-Lite pistons that are CNC machined for optimal cam shape and profile for peak HP and service life. 4-stroke kits feature a ‘race-ready’ dome finish with smooth edges for improved combustion flow. Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal. 4-stroke race applications feature Wiseco’s Armor Glide skirt coating to provide reduced friction and noise to contribute to increased horsepower. Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Super-cross, Motocross, GNCC, Super-bike, and more.

  • Displacement: 250cc
  • Piston Standard Bore: 77.00mm
  • Oversize Bore: 0.00mm
  • Stroke: 53.6mm
  • Compression Ratio: 12.5 : 1
Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Top-End Rebuild Kit
Part Number PK1401
Fitment Type
Unit Sale Qty Each
Style Nikasil Bore
Material
Color
Size
Finish
Position
Functional Length
Cable Sleeve Length
Cable Sleeve Travel
Driver Seat Length
Passenger Seat Length
Driver Seat Width
Passenger Seat Width
Piston/Cylinder Size 77.00mm
Piston Size Added 0.00mm
Cylinder Stroke Volume 53.60mm
Final Engine Displacement 250cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
Ca ARB Compliance Non CARB Complaint CARB Compliant
Product Disclaimer

2011 Yamaha WR250F
2010 Yamaha WR250F
2009 Yamaha WR250F
2008 Yamaha WR250F
2007 Yamaha WR250F
2006 Yamaha WR250F
2005 Yamaha WR250F
2007 Yamaha YZ250F
2006 Yamaha YZ250F
2005 Yamaha YZ250F

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