Upgrade or rebuild your compatible Yamaha engine with the Namura Cylinder Only, featuring a 95.00 mm bore and engineered to meet original equipment specifications. This brand-new replacement cylinder is manufactured for dependable fit and performance in select Yamaha YFZ450 and YZ450F applications. Manufacturer part number CX-40005 and vendor part number 190-40005 identify this Namura cylinder assembly.
Constructed from AB4C aluminum, the cylinder features a nickel-silicon-carbide-plated bore designed to provide strong wear resistance and long-term durability. Its OEM-based design supports a straightforward installation for many applications, with no crankcase modifications typically required. Always verify engine year, model, bore requirements, and installation specifications before beginning an engine rebuild.
Fitment includes the 2004–2009 and 2012–2013 Yamaha YFZ450, along with select Yamaha YZ450F models, including 2003 and 2005. This cylinder is supplied as a cylinder-only component and is intended for riders, technicians, and performance enthusiasts seeking a reliable replacement for a compatible engine configuration. Namura part CX-40005 combines precise manufacturing with materials selected for durability in demanding off-road use.
Features:
- Brand: Namura
- Manufacturer part number: CX-40005
- Vendor part number: 190-40005
- Bore size: 95.00 mm
- Material: AB4C aluminum
- Bore finish: Nickel-silicon-carbide plating
- Design: Manufactured to OEM specifications
- Installation: Designed as a simple drop-in replacement for compatible applications
- Fitment: 2004–2009 and 2012–2013 Yamaha YFZ450; 2003 and 2005 Yamaha YZ450F
- Application: Cylinder-only replacement for compatible engine rebuilds
Fitment:
2003 Yamaha WR450F
2003 Yamaha YZ450F
2004 Yamaha WR450F
2004 Yamaha YFZ450
2005 Yamaha WR450F
2005 Yamaha YFZ450
2005 Yamaha YZ450F
2006 Yamaha WR450F
2006 Yamaha YFZ450
2007 Yamaha YFZ450
2008 Yamaha YFZ450
2009 Yamaha YFZ450
2010 Yamaha YFZ450
2011 Yamaha YFZ450
2012 Yamaha YFZ450
2013 Yamaha YFZ450