Wiseco PK1290 Pro-Lite Top End Piston Kit - 67.5mm for KX250

The Wiseco PK1290 is a complete Pro-Lite top end piston kit designed for the Kawasaki KX250, featuring a 67.5mm bore (617M). This kit provides everything needed to properly rebuild or overbore the top end of a 2-stroke KX250 engine in a single purchase.

Pro-Lite Piston Design:

• Forged construction using high-silicon, low-expansion aluminum alloy for superior strength-to-weight ratio
• CNC machined for optimal cam shape and skirt profile, delivering peak horsepower and extended service life
• Extra lightweight design for instant throttle response
• Computer-engineered piston skirt profile minimizes cylinder wall friction
• Horizontal slot-pin oiling reduces friction and provides scuff resistance
• Pressure seal groove ensures maximum ring seal

Kit Includes:

• Forged Pro-Lite piston (67.5mm / 617M bore)
• Piston ring(s)
• Wrist pin
• Wrist pin circlips
• Top end gasket set

Wiseco piston kits are engineered, forged, and machined in the USA and are trusted by top race teams across Supercross, Motocross, and GNCC competition. The PK1290 is an ideal solution for top end rebuilds or overboring applications where a reliable, race-proven forged piston is required.