The PROX 01.4406.A Forged Piston Kit is a direct-interchange replacement designed for Kawasaki high-performance four-stroke engines with Nikasil-coated cylinders. This standard-bore piston kit provides a 12.0:1 compression ratio and is manufactured to support reliable engine performance, durability, and consistent fitment without the higher cost of comparable OEM components.
The piston kit includes the forged piston, piston rings, wrist pin, and retaining clips, providing the primary components needed for a complete piston replacement. It is engineered for use with the original cylinder configuration and is suitable for servicing engines that require a standard-size replacement piston. Verify cylinder condition, ring gap, and all manufacturer service specifications before installation.
Feature: Direct interchange with applicable OEM piston components
Feature: Forged piston construction for strength and durability
Feature: Standard bore size with a 12.0:1 compression ratio
Feature: Complete kit includes piston, rings, wrist pin, and clips
Feature: Designed for Nikasil-coated cylinders
Feature: Cost-effective alternative to OEM pricing
The PROX 01.4406.A piston kit fits 2006–2008 Kawasaki KX450F models and 2008–2010, 2012, and 2019–2021 Kawasaki KLX450R models. Confirm the motorcycle year, engine specifications, and existing piston size before ordering. Brand: PROX. Manufacturer part number: 01.4406.A. Vendor part number: 19-4406A.
Features:
- Direct interchange with applicable OEM piston components
- Forged piston construction for strength and durability
- Standard bore size with a 12.0:1 compression ratio
- Complete kit includes piston, rings, wrist pin, and clips
- Designed for Nikasil-coated cylinders
- Cost-effective alternative to OEM pricing
- Fits 2006–2008 Kawasaki KX450F and 2008–2010, 2012, and 2019–2021 Kawasaki KLX450R models
Fitment:
2006 Kawasaki KX450F
2007 Kawasaki KX450F
2008 Kawasaki KLX450R
2008 Kawasaki KX450F
2009 Kawasaki KLX450R
2010 Kawasaki KLX450R
2011 Kawasaki KLX450R
2012 Kawasaki KLX450R
2013 Kawasaki KLX450R
2014 Kawasaki KLX450R
2015 Kawasaki KLX450R
2016 Kawasaki KLX450R
2017 Kawasaki KLX450R
2018 Kawasaki KLX450R
2019 Kawasaki KLX450R
2020 Kawasaki KLX450R
2021 Kawasaki KLX450R