788M05400 Wiseco GP Style Std Piston Kit for Kawasaki KX125 2001-2008 54.00 mm

GP Style Std Piston Kit for Kawasaki KX125

This Wiseco GP Style standard piston kit for Kawasaki KX125 provides a 54.00 mm top-end replacement, cross-referenced under part number 788M05400.

Overview

This Wiseco GP Style standard piston kit for Kawasaki KX125 serves riders refreshing the top end of 2001 through 2008 machines. The GP Style profile is aimed at two-stroke engines that spend time at high rpm and need consistent ring seal. It fits stock bore dimensions for a direct rebuild without machining.

Built For Performance

• GP Style piston profile intended for high-rpm two-stroke use
• Standard 54.00 mm bore size matches stock cylinder dimensions
• Wiseco forged construction for strength under race conditions
• Kit supplies piston and matching components for one top-end job
• Identified by part number 788M05400 for straightforward lookup
• Sized for KX125 cylinders without overboring

Fits These Machines

• for Kawasaki KX125 2001
• for Kawasaki KX125 2002
• for Kawasaki KX125 2003
• for Kawasaki KX125 2004
• for Kawasaki KX125 2005
• for Kawasaki KX125 2006
• for Kawasaki KX125 2007
• for Kawasaki KX125 2008

On-The-Job Use

• Top-end rebuilds on 125cc motocross bikes
• Compression refresh before race season
• Routine maintenance on amateur and pro-level race machines
• Reconditioning a used KX125 before resale

Specs At A Glance

Good To Know

Q: Is this kit an original Kawasaki part? A: No, this is a Wiseco GP Style piston kit made for Kawasaki KX125 applications rather than a factory original. It is sized to fit the listed model years at standard bore.

Q: How often should a KX125 top end be replaced? A: Most 125cc two-strokes used for racing call for piston replacement at fairly short intervals, commonly measured in hours rather than miles. Checking compression and cylinder condition each rebuild helps decide when the piston is due.

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