4990M09600 Wiseco Std Piston Kit for Kawasaki KX450F 2009-2012 96mm 13.5:1 CR

Wiseco Std Piston Kit for Kawasaki KX450F

This Wiseco standard piston kit for Kawasaki KX450F provides a 96.00 mm piston with a 13.5:1 compression ratio for top-end rebuilds, referencing Wiseco part 4990M09600.

Overview

This Wiseco Std Piston Kit for Kawasaki KX450F keeps the stock 96.00 mm bore while raising compression to 13.5:1 for stronger four-stroke response. Built as a drop-in standard size piston kit, it suits KX450F owners and engine builders refreshing a high-hour top end without boring the cylinder.

Built For Performance

• 96.00 mm standard bore piston matched to the stock cylinder size
• 13.5:1 compression ratio for improved four-stroke power delivery
• Forged piston construction for high heat and rpm durability
• Kit form with rings, wrist pin, and circlips
• Wiseco part 4990M09600 for straightforward reference

Fits These Machines

• for Kawasaki KX450F 2009
• for Kawasaki KX450F 2010
• for Kawasaki KX450F 2011
• for Kawasaki KX450F 2012

On-The-Job Use

• Four-stroke top-end rebuilds on KX450F motocross bikes
• Restoring compression on tired, high-hour engines
• Standard-bore refreshes where the cylinder remains in spec
• Race-season service and preventive maintenance

Specs At A Glance

Good To Know

Q: Will this piston need the cylinder bored? A: It is a standard 96.00 mm piston, so it is intended for a cylinder already at stock bore in good condition; measure bore and clearance before assembly.

Q: What comes with this piston kit? A: Wiseco Std Piston Kits include the piston, ring set, wrist pin, and circlips required to complete a top-end rebuild.

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