Audi 5cyl. S2 & RS2 exhaust Valves SUPERTECH

Black nitrided exhaust valves from Supertech for Audi S2 & RS2 5 cylinder turbo engines.The VAG standard valves have the major disadvantage that they can break in engines with a significant increase in power or with long mileage.The standard valves are hollow inside and sodium-cooled. With the very thin valve stem, there is not much material left to protect the valve!Supertech valves offer the following advantages: High temperature resistance Strong tear resistance Special heat-treated material High strength material Black nitrided Supertech valves are made from an extremely heat resistant alloy.The Supertech valves are suitable for engines with turbocharging and nitrous oxide injection where high exhaust temperatures are used.Available in original size and 0.5mm oversize.The valve seat must be adapted for oversize valves.The kit contains 10 valves without valve keys. Suitable Supertech wedges are required. These can be found below at accesories.