The PROX 31.2423 Cam Chain is a precision-engineered replacement timing chain for select Yamaha YFZ450 sport ATVs. Manufactured in Japan by BorgWarner, this cam chain is designed to meet original equipment specifications, providing dependable timing control, smooth engine operation, and long-lasting performance for demanding riding conditions.
Built with a strong M-Type chain design, the PROX cam chain features a specially heat-treated pin along with advanced pin and link connections. These construction details help improve strength, durability, and resistance to wear, making it a reliable choice for engine rebuilds, maintenance, and replacement applications. The chain is designed for proper fit and function without requiring modifications when used with the listed applications.
Model fitment includes the 2004–2009 and 2012–2013 Yamaha YFZ450, as well as the 2007–2008 Yamaha YFZ450 SE. Verify the vehicle model and year before ordering to ensure compatibility. This product is identified by PROX part number 31.2423 and is supplied as a replacement cam chain manufactured for dependable aftermarket service.
Features:
- Brand: PROX
- Part Number: 31.2423
- Manufacturer: BorgWarner
- Manufacturing Origin: Japan
- Application: Cam chain for Yamaha YFZ450 sport ATVs
- Design: Manufactured to original equipment specifications
- Chain Type: Strong M-Type chain
- Construction: Specially heat-treated pin with advanced pin and link connections
- Fitment: 2004–2009 Yamaha YFZ450; 2012–2013 Yamaha YFZ450; 2007–2008 Yamaha YFZ450 SE
Fitment:
2003 Yamaha WR450F
2003 Yamaha YZ450F
2004 Yamaha WR450F
2004 Yamaha YFZ450
2004 Yamaha YZ450F
2005 Yamaha WR450F
2005 Yamaha YFZ450
2005 Yamaha YZ450F
2006 Yamaha WR450F
2006 Yamaha YFZ450
2006 Yamaha YFZ450 Bill Balance Edition
2006 Yamaha YZ450F
2007 Yamaha WR450F
2007 Yamaha YFZ450
2007 Yamaha YFZ450 Bill Balance Edition
2007 Yamaha YFZ450 SE
2007 Yamaha YZ450F
2008 Yamaha WR450F
2008 Yamaha YFZ450
2008 Yamaha YFZ450 SE
2008 Yamaha YZ450F
2009 Yamaha WR450F
2009 Yamaha YFZ450
2009 Yamaha YZ450F
2010 Yamaha WR450F
2011 Yamaha WR450F
2012 Yamaha WR450F
2012 Yamaha YFZ450
2013 Gas-Gas EC 450F
2013 Yamaha WR450F
2013 Yamaha YFZ450
2014 Gas-Gas EC 450F
2014 Yamaha WR450F
2015 Gas-Gas EC 450F
2015 Yamaha WR450F
2020 Yamaha YZ450F
2021 Yamaha WR450F
2021 Yamaha YZ450F
2021 Yamaha YZ450FX
2022 Yamaha WR450F
2022 Yamaha YZ450F
2022 Yamaha YZ450FX
2023 Yamaha WR450F
2023 Yamaha YZ450F
2023 Yamaha YZ450FX
2024 Yamaha WR450F
2024 Yamaha YZ450F
2024 Yamaha YZ450FX
2025 Yamaha WR450F
2025 Yamaha YZ450F
2025 Yamaha YZ450FX
2026 Yamaha YZ450F