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Sodium Filled Inconel Exhaust Valvesview productsInconel Exhaust Valvesview productsTitanium Exhaust Valvesview productsChrome 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 SUPERTECH CONFIGURATORHELP ME CHOOSE✕FIND YOUR PERFECT BUILDAnswer 3 quick questions about your build goals and we\'ll recommend the exact Supertech parts for your .Takes about 30 seconds · You can adjust any selection afterward1 BUILD PURPOSE2 HP DELIVERY3 CAM PROFILESTART GUIDED SETUPQuestion 1 of 3WHAT'S YOUR PRIMARY BUILD PURPOSE?This helps us match the right valve and sealing specifications to your use case.🏁Street & Track DaysMost PopularOccasional track use, daily-driven or weekend car🏆High Performance RacingRegular competitive events, sustained high-RPM operation⚡Drag / Time Attack / Max PerformanceHigh OutputMaximum performance, extreme heat cycles, high-output builds BackSelect an option to continueQuestion 2 of 3How is horsepower delivered?Forced induction creates significantly higher heat and pressure loads on valvetrain components.🔵Naturally AspiratedStandardNo turbo or supercharger — standard intake air🔥Forced InductionTurbocharged or supercharged — elevated heat and pressure BackSelect an option to continueQuestion 3 of 3What cam profile are you running?Higher-lift cams increase valve spring demands and affect valve guide wear rates.📐StockRecommendedFactory camshaft profile — standard lift and duration📈Mild Profile / LiftSlightly increased lift and duration for improved flow🚀High Profile / LiftAggressive cam profile for maximum airflow and power BackSelect an option to continueRecommended ConfigurationPerformance SpecStreet & Track Day Build The ideal all-rounder for high-performance street use with occasional track days. Naturally aspirated with a stock cam — triple groove stainless valves provide excellent retention without over-engineering.Key Selections Triple groove stainless valves — best street/track balance Dual valve spring kit with steel retainers Stock cam profile — factory-spec valve spring rate H-beam connecting rods for high-RPM durability Why Performance Spec? Street & Track Days + naturally aspirated + stock cam is the only combination that fits within Performance Spec tolerances — no additional heat or spring-rate demands require an upgrade. Restart Apply performance SpecRecommended ConfigurationExtreme SpecExtreme Spec Build Maximum-output configuration with full Inconel valvetrain, beryllium copper guides, and high-lift titanium spring kit. Built for forced induction with a high-lift cam — drag, time attack, or any application demanding absolute reliability under extreme conditions.Key Selections Full Inconel triple groove valvetrain — maximum heat resistance High-lift titanium retainer spring kit for aggressive cam profiles Forced induction spec — PTFE extreme stem seals Billet H-beam connecting rods and fire-ring MLS head gasket Why Extreme Spec? Forced induction combined with a high-lift cam creates thermal and mechanical loads that exceed Race Spec limits — Extreme Spec's full Inconel valvetrain and beryllium copper guides are required. Restart Apply extreme SpecRecommended ConfigurationRace SpecRace Spec Build Configured for competitive performance with Inconel exhaust valves and titanium retainers. Optimised for naturally aspirated with a stock cam — the right spec for sustained high-RPM track operation.Key Selections Triple groove stainless intake with Inconel exhaust for track durability Dual valve spring kit with titanium retainers Stock cam profile — optimised spring rate I-beam connecting rods for sustained high-RPM operation Why Race Spec? High Performance Racing demands Race Spec's Inconel exhaust valves and titanium retainer spring kit for sustained competitive operation beyond Performance Spec limits. Restart Apply race Spec
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
