4630M08000 Wiseco .080 Piston for Kawasaki KLX300 KLX300R 1997-2007 80mm 11:1

Wiseco .080 Piston for Kawasaki KLX300/KLX300R

This .080 oversize piston for Kawasaki KLX300 and KLX300R raises displacement with an 80mm bore and 11:1 compression, replacing the OEM piston with cross-reference 4630M08000.

Overview

This Wiseco .080 piston for Kawasaki KLX300 and KLX300R models is a forged replacement that resets top end compression and bore size after cylinder wear. The 80mm diameter and 11:1 compression ratio make this an oversize piston for riders rebuilding a worn top end. It suits owners and mechanics working on 1997-2007 KLX300 and KLX300R machines who need a dependable piston matched to their machine.

Built For Performance

• Forged construction for strength under sustained load
• 80mm bore suits a .080 oversize cylinder bore
• 11:1 compression ratio raises combustion pressure
• Wiseco 4630M08000 cross-reference for easy lookup
• Designed for the Kawasaki KLX300 and KLX300R top end

Fits These Machines

• for Kawasaki KLX300 1997-2007
• for Kawasaki KLX300R 1997-2007

On-The-Job Use

• Top end rebuilds on worn KLX300 engines
• Trail and dual sport riding where midrange response matters
• Restoring compression after cylinder wear
• Shop builds requiring an oversize replacement piston

Specs At A Glance

Good To Know

Q: Does this piston require machine work on my cylinder? A: Yes, a .080 oversize piston needs the cylinder bored and honed to the matching diameter before it can be installed. Always check ring end gap and piston-to-cylinder clearance during assembly.

Q: Should I replace rings and clips at the same time? A: Replacing rings, pin, and clips together is standard practice when installing a new piston. Use a top end gasket kit and recheck torque values during reassembly.

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