Custom Products from Classic Triumph T160 Triplex Primary Chain Conversion Kit Cush Drive Repair Kit More Information More Information Aluminium Trident/Rocket 3 Rocker Box Gaskets Std Trident Rocker Box Gaskets fail prematurely due to Rocker Box movement and Head Bolt pressure.Stronger Aluminium gaskets resolve this problem, and when used with a suitable Flange Sealant are a vast improvement.1.6mm and 2mm thickness options available.Purchase Now