The Bike-It Tyre Valves are a replacement Tyre Valve which is available in four different options. Replacement Tyre Valves options: --8mm Chrome plated tubeless valve --8mm Gold coloured tubeless valve --10mm Chrome plated tubeless valve --90° tubeless valve. 8.3mm diameter tyre valves are suitable for European and older motorcycles while the 11.3mm diameter tyre valves are suitable for all later Japanese motorcycles. Established in 1971, Demon Tweeks services the needs of motorsport competitors by offering top products, quality service, and rapid availability. Our shop is designed to be fast, clear, and easy to use, aiming to provide all necessary information for a simple and hassle-free purchase.