556M06740 Wiseco Std Piston Kit 67.40 mm for Kawasaki KX250 1987-1989

Piston Kit for Kawasaki KX250

This Wiseco Std piston kit (part 556M06740, 67.40 mm bore) restores stock top-end compression on 1987-1989 Kawasaki KX250 two-strokes.

Overview

This Wiseco piston kit for Kawasaki KX250 supplies a standard-size piston and matched components to refresh a worn top end. The 67.40 mm bore piston kit (556M06740) is for riders rebuilding 1987-1989 KX250 machines. Choose this piston kit for Kawasaki KX250 service when the cylinder remains at the stock 67.40 mm size.

Built For Performance

• Standard bore size of 67.40 mm (part 556M06740)
• Wiseco forged piston construction for durability under high combustion loads
• Complete top-end kit with piston, rings, wrist pin, and clips
• Designed for two-stroke MX engines that see frequent high-RPM use
• Stock sizing allows a direct fit in an unmodified cylinder

Fits These Machines

• for Kawasaki KX250 1987
• for Kawasaki KX250 1988
• for Kawasaki KX250 1989

On-The-Job Use

• Top-end rebuilds on a stock cylinder
• Motocross and off-road racing engine refresh
• Trail and practice bike maintenance
• Restoring compression on a high-hour two-stroke

Specs At A Glance

Good To Know

Q: Will this fit my cylinder without machining? A: This is a standard-size piston, so it fits a cylinder still at the stock 67.40 mm bore. Measure your bore to confirm before ordering.

Q: Does the kit include rings and wrist pin? A: A standard Wiseco top-end kit like this ships with the piston, rings, wrist pin, and clips. Check the listing contents to confirm exactly what is included.

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