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737M06640 Wiseco Std Domed Piston Kit for Kawasaki KX250 1992-2001 66.40 mm

737M06640 Wiseco Std Domed Piston Kit for Kawasaki KX250 1992-2001 66.40 mm

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Wiseco Std Piston Kit for Kawasaki KX250

This Wiseco standard piston kit for Kawasaki KX250 features a domed piston design and is cross-referenced as 737M06640 with a 66.40 mm bore size.

Overview

This Wiseco std piston kit for Kawasaki KX250 is a domed top end replacement built for 1992-2001 models. The 66.40 mm piston kit for Kawasaki KX250 restores compression and power to tired two-stroke engines. Riders rebuilding a worn top end or refreshing a rebuild will find this Wiseco piston kit for Kawasaki KX250 built to take the punishment of motocross and trail use.

Built For Performance

  • Forged aluminum construction for high strength and heat resistance
  • Domed piston crown to match the KX250 combustion chamber
  • 66.40 mm standard bore size to match OEM cylinder dimensions
  • Wiseco part number 737M06640 for easy cross-referencing
  • Precision-machined ring grooves for consistent ring seal
  • Kit includes piston, rings, wrist pin, and circlips

Fits These Machines

  • for Kawasaki KX250 1992
  • for Kawasaki KX250 1993
  • for Kawasaki KX250 1994
  • for Kawasaki KX250 1995
  • for Kawasaki KX250 1996
  • for Kawasaki KX250 1997
  • for Kawasaki KX250 1998
  • for Kawasaki KX250 1999
  • for Kawasaki KX250 2000
  • for Kawasaki KX250 2001

On-The-Job Use

  • Top end rebuilds on 1992-2001 KX250 motocross bikes
  • Restoring compression after worn rings or piston scoring
  • Race season refresh to maintain peak performance
  • Trail and track riding where reliable power matters
  • Preventive maintenance on high-hour two-stroke engines

Specs At A Glance

Part Number(s) 737M06640
Bore Size 66.40 mm
Piston Type Standard, Domed
Material Forged Aluminum
Compatibility for Kawasaki KX250 1992-2001

Good To Know

Q: What is included in this Wiseco piston kit? A: The kit typically includes the piston, rings, wrist pin, and circlips needed for a top end rebuild.

Q: Do I need to check cylinder condition before fitting this piston? A: Yes, always measure your bore and inspect the cylinder for wear or taper before installing a new standard piston.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.

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