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Wiseco Piston Kit for 1999-26 Yamaha YZ250/X - 66.40mm Cylinder - 804M06640

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Wiseco Piston Kit for 1999-26 Yamaha YZ250/X - 66.40mm Cylinder - 804M06640

Wiseco Performance Piston Kit

Part Number: 804M06640 

  • These kits contain everything you need to complete your piston repair, 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 Piston Kits are offered for nearly every popular application in the powersports market. These kits contain everything you need to complete your piston repair, 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 Supercross, Motocross, GNCC, Super-bike, and more.

Specs:

  • Displacement: 249cc
  • Bore-Standard: 66.40mm
  • Bore-Actual: 66.40mm
  • Bore-Oversize: STD
  • Stroke: 72.00mm
Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Piston Kit
Part Number 804M06640
Fitment Type
Unit Sale Qty Each
Style
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 66.40mm
Piston Size Added 0.00mm
Cylinder Stroke Volume 72.00mm
Final Engine Displacement 249cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
California Emissions FALSE
Product Disclaimer

2020 Yamaha YZ250
2019 Yamaha YZ250
2018 Yamaha YZ250
2017 Yamaha YZ250
2016 Yamaha YZ250
2015 Yamaha YZ250
2014 Yamaha YZ250
2013 Yamaha YZ250
2012 Yamaha YZ250
2011 Yamaha YZ250
2010 Yamaha YZ250
2009 Yamaha YZ250
2008 Yamaha YZ250
2007 Yamaha YZ250
2006 Yamaha YZ250
2005 Yamaha YZ250
2004 Yamaha YZ250
2003 Yamaha YZ250
2002 Yamaha YZ250
2020 Yamaha YZ250X
2019 Yamaha YZ250X
2018 Yamaha YZ250X
2017 Yamaha YZ250X
2016 Yamaha YZ250X

$118.00
Wiseco Piston Kit for 1999-26 Yamaha YZ250/X - 66.40mm Cylinder - 804M06640
$118.00

Product Information

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Description

Wiseco Performance Piston Kit

Part Number: 804M06640 

  • These kits contain everything you need to complete your piston repair, 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 Piston Kits are offered for nearly every popular application in the powersports market. These kits contain everything you need to complete your piston repair, 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 Supercross, Motocross, GNCC, Super-bike, and more.

Specs:

  • Displacement: 249cc
  • Bore-Standard: 66.40mm
  • Bore-Actual: 66.40mm
  • Bore-Oversize: STD
  • Stroke: 72.00mm
Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Piston Kit
Part Number 804M06640
Fitment Type
Unit Sale Qty Each
Style
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 66.40mm
Piston Size Added 0.00mm
Cylinder Stroke Volume 72.00mm
Final Engine Displacement 249cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
California Emissions FALSE
Product Disclaimer

2020 Yamaha YZ250
2019 Yamaha YZ250
2018 Yamaha YZ250
2017 Yamaha YZ250
2016 Yamaha YZ250
2015 Yamaha YZ250
2014 Yamaha YZ250
2013 Yamaha YZ250
2012 Yamaha YZ250
2011 Yamaha YZ250
2010 Yamaha YZ250
2009 Yamaha YZ250
2008 Yamaha YZ250
2007 Yamaha YZ250
2006 Yamaha YZ250
2005 Yamaha YZ250
2004 Yamaha YZ250
2003 Yamaha YZ250
2002 Yamaha YZ250
2020 Yamaha YZ250X
2019 Yamaha YZ250X
2018 Yamaha YZ250X
2017 Yamaha YZ250X
2016 Yamaha YZ250X

Wiseco Piston Kit for 1999-26 Yamaha YZ250/X - 66.40mm Cylinder - 804M06640 | SVS PowerSports