822M05400 Wiseco Std Piston Kit for Kawasaki KX125 2003 54.00mm Bore Size

Wiseco Std Piston Kit for Kawasaki

This Wiseco Std Piston Kit for Kawasaki KX125 restores top-end compression with a 54.00 mm standard bore piston, referencing Wiseco part 822M05400 for a direct-fit rebuild.

Overview

This Wiseco Std Piston Kit for Kawasaki is a complete top-end piston assembly built to return a worn KX125 engine to factory standard bore dimensions. The kit pairs a 54.00 mm piston with the required rings, wrist pin, and circlips so one order covers the full rebuild. It suits riders and mechanics servicing a 2003 KX125 who want dependable compression without machining the cylinder.

Built For Performance

• Standard 54.00 mm bore size keeps the cylinder at stock dimensions
• Wiseco forged piston construction for strength under high rpm
• Includes piston, rings, wrist pin, and circlips for a complete top-end job
• Precision-machined ring grooves for consistent sealing
• Reference number 822M05400 for straightforward cross-checking

Fits These Machines

• for Kawasaki KX125 2003

On-The-Job Use

• Top-end rebuilds after piston wear or loss of compression
• Routine motocross maintenance on a 2003 KX125
• Restoring stock bore dimensions after cylinder inspection
• Race season refresh before the next round of events

Specs At A Glance

Good To Know

Q: Is this a standard bore or oversize piston? A: This is a standard 54.00 mm piston kit, so it is intended for a cylinder still at stock bore size. Measure the bore before ordering to confirm it has not been previously overbored.

Q: Does the kit include everything for a top-end rebuild? A: The kit supplies the piston, rings, wrist pin, and circlips for the piston assembly. Gaskets and bearings are separate items and should be ordered to match your rebuild plan.

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