Upgrade your cylinder head with this premium bronze valve guide set, specifically engineered for late-production TR4 and all TR4A models. These guides offer superior thermal conductivity and wear resistance compared to standard cast-iron versions, making them essential for high-performance or lead-free fuel conversions.

Product Specs

• Material: High-grade Manganese Bronze alloy
• Compatibility: Triumph TR4 (Late models) and TR4A
• Contents: Full engine set (Includes both Inlet and Exhaust guides)
• Application: Direct replacement for standard factory guides

Why Choose Bronze Valve Guides?

• Superior Lubrication: The natural properties of bronze reduce friction on the valve stems, significantly extending the life of your valvetrain.
• Rapid Heat Dissipation: Efficiently transfers heat away from the valves to the cylinder head, reducing the risk of valve sticking or burning.
• Lead-Free Ready: Specifically designed to withstand the increased operating temperatures associated with modern unleaded fuels.
• Tighter Tolerances: Maintains precise valve alignment for better seat sealing, improved compression, and consistent power delivery

Installation Tip: For optimum performance, these guides should be press-fitted into a clean cylinder head. We recommend having the valve seats recut after installation to ensure perfect concentricity with the new guide bores.

[Bronze valve guide set for late TR4 and TR4A cylinder heads. Includes inlet and exhaust.]