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Sodium Filled Inconel Exhaust Valvesview productsInconel Exhaust Valvesview productsStainless Steel Black Nitride Exhaust Valvesview products Racing Exhaust Valves Supertech Racing Exhaust Valves are built to handle extreme heat and continuous load. With application-matched alloys, precise seat geometry, and robust tip hardening, they deliver long-term sealing and stability for naturally aspirated and boosted builds alike. Key Benefits Why Choose Supertech Exhaust Valves High-temperature strength for endurance and boosted EGT conditions. Excellent heat resistance and seat-face durability. Hardened tips and controlled stem finish to reduce guide wear. Swirl-polished heads and validated head profiles for stable flow. Offered in OE diameter and oversize options where applicable. Materials & Surface Finishes Inconel / Superalloy Recommended for turbo and track duty where exhaust gas temperatures are elevated. Maintains strength at temperature. Resists oxidation and thermal fatigue. Stainless Exhaust (23-8N/EV16) A proven choice for street and NA performance with strong hot hardness. Black Nitride Unmatched dimentional tolerances Surface Details Superfinish Stem, 1/3 roughtness of a regular valve Seat-face accuracy for reliable sealing. Tip hardening for greater durability. Engineering Options Geometry Unmatched Valve seat eccentricity Backcut for improve flow Sizes OE diameter for stock ports. Oversize options for ported heads where supported. Compatibility Works with performance seat materials. Match with Supertech springs, retainers, and guides. Use Cases Street / NA Stainless exhaust valves are a strong, durable choice. Pair with matched springs for your cam profile. Boosted / Track Select Inconel or equivalent superalloy for sustained high EGT and long duty cycles. Installation Notes Verify guide ID and set stem-to-guide clearance per material. Cut seats for correct angles and contact width; confirm concentricity. Check installed height, seat pressure, coil bind, and retainer-to-seal clearance. Confirm piston-to-valve clearance at planned lift and timing. Use appropriate break-in and inspection intervals for your application. FAQ Do I need Inconel for my build? For turbocharged, supercharged, or endurance racing where EGT is high, Inconel or similar superalloy is recommended. For typical street or NA builds, stainless exhaust valves are often sufficient. Will Black Nitride help on exhaust valves? BN is a surface treatment that can improve wear, on stainless valves. It is not a substitute for a superalloy in high EGT environments. Can I run oversize exhaust valves? Oversize valves can help in ported heads with the correct seat throat and chamber work. Verify clearances and flow data before choosing. Shop Intake Valves Shop Valve Spring Kits Shop Valve Guides
Racing Exhaust Valves Supertech Racing Exhaust Valves are built to handle extreme heat and continuous load. With application-matched alloys, precise seat geometry, and robust tip hardening, they deliver long-term sealing and stability for naturally aspirated and boosted builds alike. Key Benefits Why Choose Supertech Exhaust Valves High-temperature strength for endurance and boosted EGT conditions. Excellent heat resistance and seat-face durability. Hardened tips and controlled stem finish to reduce guide wear. Swirl-polished heads and validated head profiles for stable flow. Offered in OE diameter and oversize options where applicable. Materials & Surface Finishes Inconel / Superalloy Recommended for turbo and track duty where exhaust gas temperatures are elevated. Maintains strength at temperature. Resists oxidation and thermal fatigue. Stainless Exhaust (23-8N/EV16) A proven choice for street and NA performance with strong hot hardness. Black Nitride Unmatched dimentional tolerances Surface Details Superfinish Stem, 1/3 roughtness of a regular valve Seat-face accuracy for reliable sealing. Tip hardening for greater durability. Engineering Options Geometry Unmatched Valve seat eccentricity Backcut for improve flow Sizes OE diameter for stock ports. Oversize options for ported heads where supported. Compatibility Works with performance seat materials. Match with Supertech springs, retainers, and guides. Use Cases Street / NA Stainless exhaust valves are a strong, durable choice. Pair with matched springs for your cam profile. Boosted / Track Select Inconel or equivalent superalloy for sustained high EGT and long duty cycles. Installation Notes Verify guide ID and set stem-to-guide clearance per material. Cut seats for correct angles and contact width; confirm concentricity. Check installed height, seat pressure, coil bind, and retainer-to-seal clearance. Confirm piston-to-valve clearance at planned lift and timing. Use appropriate break-in and inspection intervals for your application. FAQ Do I need Inconel for my build? For turbocharged, supercharged, or endurance racing where EGT is high, Inconel or similar superalloy is recommended. For typical street or NA builds, stainless exhaust valves are often sufficient. Will Black Nitride help on exhaust valves? BN is a surface treatment that can improve wear, on stainless valves. It is not a substitute for a superalloy in high EGT environments. Can I run oversize exhaust valves? Oversize valves can help in ported heads with the correct seat throat and chamber work. Verify clearances and flow data before choosing. Shop Intake Valves Shop Valve Spring Kits Shop Valve Guides
