PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression
PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression

PROX 01.3420.A Forged Piston Kit for Kawasaki KFX 400 and Suzuki DR-Z400, 89.96 mm Standard Bore, 12.2:1 Compression

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The PROX 01.3420.A forged piston kit is designed for select Kawasaki and Suzuki 400cc engines with Nikasil-plated cylinders. Built to provide a reliable replacement for worn or damaged OEM components, this standard-bore piston kit supports proper engine performance and offers a cost-effective alternative to original equipment parts.

This complete kit includes the forged piston, piston rings, wrist pin, and retaining clips, providing the primary components needed for installation. The 89.96 mm standard-bore piston and 12.2:1 compression ratio are engineered for compatibility with the specified factory cylinder configuration. The piston is suitable for applications requiring a direct interchange with the corresponding OEM part.

Fitment includes the 2003–2006 Kawasaki KFX 400, 2003 Kawasaki KLX400R, and 2000–2004 Suzuki DR-Z400. Verify the model year, cylinder condition, bore specification, and engine configuration before installation. This PROX piston kit is manufactured for dependable service in powersports applications and is supplied under manufacturer part number 01.3420.A and vendor part number 19-5220A.

Features:

  • Value: Provides a cost-effective alternative to OEM piston components.
  • Interchange: Directly interchanges with corresponding OEM parts.
  • Complete kit: Includes forged piston, piston rings, wrist pin, and retaining clips.
  • Cylinder compatibility: Designed for Nikasil-plated cylinders with a standard 89.96 mm bore.
  • Compression ratio: Engineered for a 12.2:1 compression ratio.
  • Fitment: Fits 2003–2006 Kawasaki KFX 400, 2003 Kawasaki KLX400R, and 2000–2004 Suzuki DR-Z400 models.

Fitment:
2000 Suzuki DR-Z400
2000 Suzuki DR-Z400S
2001 Suzuki DR-Z400
2001 Suzuki DR-Z400S
2002 Suzuki DR-Z400
2002 Suzuki DR-Z400S
2003 Kawasaki KFX 400
2003 Kawasaki KLX400R
2003 Suzuki DR-Z400
2003 Suzuki DR-Z400S
2003 Suzuki Lt-Z400 QuadSport Z
2004 Kawasaki KFX 400
2004 Suzuki DR-Z400
2004 Suzuki DR-Z400S
2004 Suzuki Lt-Z400 QuadSport Z
2005 Kawasaki KFX 400
2005 Suzuki DR-Z400S
2005 Suzuki Lt-Z400 QuadSport Z
2006 Kawasaki KFX 400
2006 Suzuki DR-Z400S
2006 Suzuki Lt-Z400 QuadSport Z
2007 Suzuki DR-Z400S
2007 Suzuki Lt-Z400 QuadSport Z
2008 Suzuki DR-Z400S
2008 Suzuki Lt-Z400 QuadSport Z
2009 Suzuki DR-Z400S
2009 Suzuki Lt-Z400 QuadSport Z
2010 Suzuki DR-Z400S
2011 Suzuki DR-Z400S
2012 Suzuki DR-Z400S
2012 Suzuki Lt-Z400 QuadSport Z
2013 Suzuki DR-Z400S
2013 Suzuki Lt-Z400 QuadSport Z
2014 Suzuki DR-Z400S
2014 Suzuki Lt-Z400 QuadSport Z
2015 Suzuki DR-Z400S
2016 Suzuki DR-Z400S
2017 Suzuki DR-Z400S
2018 Suzuki DR-Z400S
2019 Suzuki DR-Z400S
2020 Suzuki DR-Z400S
2020 Suzuki DR-Z400SM
2021 Suzuki DR-Z400S
2021 Suzuki DR-Z400SM
2022 Suzuki DR-Z400S