 Less-common types, known as "GP" and "TT," were mainly for road-racing and other competition use, and were used on high-performance road machines such as BSA Gold Star, BSA Spitfire and Velocette Thruxton.Amal also produced handlebars and control levers for the motorcycle industry, via a subsidiary business, Lozells Engineering, twist grips, cables and wire, plus ICI silicone grease.All AMAL chromium plated components were stated to be finished in "Nickel Chromium Plating, British Standard Approved."