Namura CA-40000 95mm Cylinder for Yamaha YFZ450R and YFZ450X

When it comes to upgrading your engine, choosing the right components is essential for achieving optimal performance. Namura’s cylinders are designed to meet the needs of both casual riders and performance enthusiasts alike. By offering a variety of sizes, Namura ensures that you can find the perfect fit for your engine rebuild or enhancement project. The advantage of choosing Namura goes beyond just their selection of cylinders. 

Upgrade or rebuild your engine with the Namura CA-40000 cylinder, designed for reliable fitment and performance across select Yamaha sport ATV applications. This cylinder features a 95.00 mm bore and is manufactured to OEM specifications, making it a practical replacement for riders seeking dependable engine components without unnecessary case modifications.

The Namura cylinder is cast from AB4C aluminum and finished with a nickel silicon carbide plated bore. This construction provides effective heat management and strong wear resistance for demanding riding conditions. As a cylinder-only component, it is intended for compatible engine rebuilds and may require additional installation components depending on the condition and configuration of the engine.

Fitment: Fits 2009–2017 Yamaha YFZ450R models and the 2010 Yamaha YFZ450X. Verify the model year, engine configuration, and required bore size before installation. The manufacturer part number is CA-40000, and the vendor part number is 189-40000.

Features:

• Bore Size: 95.00 mm cylinder bore for compatible Yamaha engine rebuilds
• Construction: Cast AB4C aluminum body for strength and effective heat transfer
• Bore Finish: Nickel silicon carbide plated bore for enhanced wear resistance
• Manufacturing: Brand new cylinder designed strictly to OEM specifications
• Installation: Simple drop-in design for most applications without case modifications
• Fitment: Fits 2009–2017 Yamaha YFZ450R and 2010 Yamaha YFZ450X
• Brand: Namura
• Manufacturer Part Number: CA-40000
• Vendor Part Number: 189-40000

Fitment:
2006 Yamaha YZ450F
2007 Yamaha WR450F
2007 Yamaha YZ450F
2008 Yamaha WR450F
2008 Yamaha YZ450F
2009 Yamaha WR450F
2009 Yamaha YFZ450R
2009 Yamaha YZ450F
2010 Yamaha WR450F
2010 Yamaha YFZ450R
2010 Yamaha YFZ450X
2011 Yamaha WR450F
2011 Yamaha YFZ450R
2011 Yamaha YFZ450X
2012 Yamaha WR450F
2012 Yamaha YFZ450R
2013 Yamaha WR450F
2013 Yamaha YFZ450R
2014 Yamaha WR450F
2014 Yamaha YFZ450R
2015 Yamaha WR450F
2015 Yamaha YFZ450R
2016 Yamaha YFZ450R
2017 Yamaha YFZ450
2017 Yamaha YFZ450R
2018 Yamaha YFZ450R
2019 Yamaha YFZ450R
2020 Yamaha YFZ450R
2021 Yamaha YFZ450R
2022 Yamaha YFZ450R
2023 Yamaha YFZ450R
2024 Yamaha YFZ450R
2025 Yamaha YFZ450R