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Wiseco Top-End Rebuild Kit for 1985-20 Yamaha PW50 - 40.50mm - PK1159

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Wiseco Top-End Rebuild Kit for 1985-20 Yamaha PW50 - 40.50mm - PK1159

Wiseco Performance Top End Piston Kit

Part Number: 1983-15
Piston Size: 40.50mm
Displacement: 51cc
Piston Standard Bore: 40.00mm
Oversize Bore: 0.50mm
Stroke: 39.20mm

  • 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.

Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Top-End Rebuild Kit
Part Number PK1159
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 40.50mm
Piston Size Added 0.50mm
Cylinder Stroke Volume 39.20mm
Final Engine Displacement 51cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
California Emissions FALSE
Product Disclaimer You MUST measure the size of your cylinder BEFORE ORDERING. Damage/Return of a piston due to ordering the wrong size will not be accepted.

1594CD - 40.50 mm Ring Set
653M04050 - Yamaha PW50 '81-19 1594CD
B1084 - Top End Bearing 10 x 14 x 12.5mm
CW10 - 10mm Round Wire Locks - Set of Two
Ring - Set
S630 - PistonPin 10 x 32.9mm NonChromed SW
W5531 - TopEnd Gskt Kit Yamaha PW50 '81-20

2020 Yamaha PW 50
2019 Yamaha PW 50
2018 Yamaha PW 50
2017 Yamaha PW 50
2016 Yamaha PW 50
2015 Yamaha PW 50
2014 Yamaha PW 50
2013 Yamaha PW 50
2012 Yamaha PW 50
2011 Yamaha PW 50
2010 Yamaha PW 50
2009 Yamaha PW 50
2008 Yamaha PW 50
2007 Yamaha PW 50
2006 Yamaha PW 50
2005 Yamaha PW 50
2004 Yamaha PW 50
2003 Yamaha PW 50
2002 Yamaha PW 50
2001 Yamaha PW 50
2000 Yamaha PW 50
1999 Yamaha PW 50
1998 Yamaha PW 50
1997 Yamaha PW 50
1996 Yamaha PW 50
1995 Yamaha PW 50
1994 Yamaha PW 50
1993 Yamaha PW 50
1992 Yamaha PW 50
1991 Yamaha PW 50
1990 Yamaha PW 50
1989 Yamaha PW 50
1988 Yamaha PW 50
1987 Yamaha PW 50
1986 Yamaha PW 50
1985 Yamaha PW 50

$41.30

Original: $118.00

-65%
Wiseco Top-End Rebuild Kit for 1985-20 Yamaha PW50 - 40.50mm - PK1159

$118.00

$41.30

Product Information

Shipping & Returns

Description

Wiseco Performance Top End Piston Kit

Part Number: 1983-15
Piston Size: 40.50mm
Displacement: 51cc
Piston Standard Bore: 40.00mm
Oversize Bore: 0.50mm
Stroke: 39.20mm

  • 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.

Tire Diameter
Speed Rating
Load Rating
Wall Construction
Tire Tube Type
Rim Size
Product Line Wiseco Top-End Rebuild Kit
Part Number PK1159
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 40.50mm
Piston Size Added 0.50mm
Cylinder Stroke Volume 39.20mm
Final Engine Displacement 51cc
Exhaust Configuration
Muffler Size
Muffler End/Tip Style
Windshield Height
Windshield Width
Handlebar Diameter
California Emissions FALSE
Product Disclaimer You MUST measure the size of your cylinder BEFORE ORDERING. Damage/Return of a piston due to ordering the wrong size will not be accepted.

1594CD - 40.50 mm Ring Set
653M04050 - Yamaha PW50 '81-19 1594CD
B1084 - Top End Bearing 10 x 14 x 12.5mm
CW10 - 10mm Round Wire Locks - Set of Two
Ring - Set
S630 - PistonPin 10 x 32.9mm NonChromed SW
W5531 - TopEnd Gskt Kit Yamaha PW50 '81-20

2020 Yamaha PW 50
2019 Yamaha PW 50
2018 Yamaha PW 50
2017 Yamaha PW 50
2016 Yamaha PW 50
2015 Yamaha PW 50
2014 Yamaha PW 50
2013 Yamaha PW 50
2012 Yamaha PW 50
2011 Yamaha PW 50
2010 Yamaha PW 50
2009 Yamaha PW 50
2008 Yamaha PW 50
2007 Yamaha PW 50
2006 Yamaha PW 50
2005 Yamaha PW 50
2004 Yamaha PW 50
2003 Yamaha PW 50
2002 Yamaha PW 50
2001 Yamaha PW 50
2000 Yamaha PW 50
1999 Yamaha PW 50
1998 Yamaha PW 50
1997 Yamaha PW 50
1996 Yamaha PW 50
1995 Yamaha PW 50
1994 Yamaha PW 50
1993 Yamaha PW 50
1992 Yamaha PW 50
1991 Yamaha PW 50
1990 Yamaha PW 50
1989 Yamaha PW 50
1988 Yamaha PW 50
1987 Yamaha PW 50
1986 Yamaha PW 50
1985 Yamaha PW 50

Wiseco Top-End Rebuild Kit for 1985-20 Yamaha PW50 - 40.50mm - PK1159 | SVS PowerSports