Yamaha FXR/ FZS Bronze Valve Guide Set

Set of 16

The Calas Performance Yamaha FXR/FZS Bronze Valve Guide Set includes 16 precision-machined valve guides for high-performance Yamaha PWC engine builds.

Valve guides support the intake and exhaust valve stems, maintain proper valve alignment, and transfer heat from the valves to the cylinder head for more effective cooling. Accurate machining and material selection are essential for maintaining valve concentricity, controlling wear, and supporting valvetrain durability.

Calas Performance Racing Bronze Valve Guides are manufactured from proprietary bronze alloys selected for their superior friction resistance, mechanical strength, and predictable thermal expansion. These characteristics allow qualified engine builders to run tighter valve-to-guide clearances, as tight as 0.0008 inch when appropriate, for improved lateral valve stability and reduced valvetrain wear.

Each set includes 16 bronze valve guides. Professional installation and final machining are required. Confirm compatibility with your Yamaha FXR or FZS engine configuration before ordering.