603M05600 Wiseco Std Piston Kit for Kawasaki KX125 1991 56.00 mm

Wiseco Standard Piston Kit for Kawasaki KX125

This Wiseco standard piston kit for Kawasaki KX125 restores top-end compression with a 56.00 mm bore size, referenced under part number 603M05600.

Overview

This Wiseco standard piston kit for Kawasaki KX125 is a top-end rebuild component sized at 56.00 mm to match the stock cylinder bore. The kit delivers the piston, rings, wrist pin, and circlips needed to refresh a worn 1991 KX125 engine. It suits riders and mechanics rebuilding a tired two-stroke top end for trail, track, or restoration work.

Built For Performance

• Standard 56.00 mm bore size matches the original cylinder diameter
• Forged piston construction for strength under high-rpm two-stroke loads
• Ring set designed to seal combustion pressure and control oil
• Wrist pin and circlips included for a complete top-end install
• Part number 603M05600 identifies the exact kit for ordering verification

Fits These Machines

• for Kawasaki KX125, 1991

On-The-Job Use

• Top-end rebuild after a seized or worn piston
• Routine refresh during a motocross race season
• Restoration of a 1991 KX125 project bike
• Trail riding maintenance on a high-hour two-stroke

Specs At A Glance

Good To Know

Q: Does this kit include rings and a wrist pin? A: Yes, a complete piston kit of this type typically ships with the piston, rings, wrist pin, and circlips for a full top-end rebuild.

Q: Should I measure my cylinder before ordering? A: Yes, confirm the bore is still at the standard 56.00 mm size, since a worn or replated cylinder may need an oversize piston instead.

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