Namura Standard Bore Cylinder for Yamaha YFZ450R & YFZ450X fits 2009-2025 95mm

Standard Bore Cylinder for Namura

This standard bore cylinder is a replacement for Yamaha YFZ450R and YFZ450X models from 2009 to 2025, featuring a 95mm bore diameter for reliable engine restoration.

Overview

The Namura standard bore cylinder is designed to restore compression and power in Yamaha YFZ450R and YFZ450X engines. This 95mm cylinder delivers a precise fit for 2009-2025 models, making it an ideal choice for rebuilding a worn top end. Whether for racing or recreational riding, this standard bore cylinder provides the durability needed for high-performance ATV use.

Built For Performance

• Manufactured from high-strength aluminum alloy for heat dissipation
• Precision-honed bore ensures consistent ring seal
• Includes sleeve and O-rings for complete installation
• Direct replacement for OEM cylinder without modifications
• Designed to meet OEM specifications for reliable power output

Fits These Machines

• for Yamaha YFZ450R (2009-2025)
• for Yamaha YFZ450X (2009-2025)

On-The-Job Use

• Engine rebuilds for motocross and trail riding
• Performance restoration after bore wear
• Replacement in high-mileage ATVs needing top-end refresh
• Racing applications requiring consistent compression

Specs At A Glance

Good To Know

Q: Is this cylinder a direct bolt-on replacement? A: Yes, the Namura standard bore cylinder is designed as a direct replacement for the original cylinder on compatible Yamaha models. No modifications are required for installation.

Q: What is the bore size of this cylinder? A: This cylinder has a 95mm standard bore, matching the OEM specification for 2009-2025 YFZ450R and YFZ450X engines.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.