Supertech

Exhaust Valve (Black Nitride w/ Anti Friction Coating / 30.5mm - 1mm Over) These valves are 1MM larger than stock, great for ported heads that need more flow through the valves. These Black...

Exhaust Valve (Inconel / 31.5mm - 1mm Over) These valves are 1MM larger than stock, great for ported street heads that don't need the huge 2.5mm oversized valves. These Inconel valves are lighter...

+1MM Exhaust Valve (Inconel / 32.50MM) These valves are 1MM larger than stock (stock valves are 31.50MM), and great for ported street heads. These Inconel valves are lighter than the stock steel...

Exhaust Valve (Inconel / 32.5mm - +2mm) These race valves are the highest level of sophistication in valve technology. Extremely heat resistant, and designed for use in racing engines that are...

Exhaust Valve (Stainless Steel / 40mm +2mm) These are the same 40mm exhaust valves we use in our stage 5 cylinder heads. 40mm exhaust valves are designed for use in heavily ported high-performance...

Exhaust Valve (Stainless Steel w/ Anti Friction Coating / 30.5mm - Stock Size) If you are replacing the factory valves but want something better without going oversized, these swirl-polished valves...