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Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Valves
Your engine breathes, adjusts timing, and manages fluid flow through a network of valves—and every one of them must open and close with absolute precision. This collection brings together the valves you need to build, rebuild, or upgrade your vehicle's most critical systems.
We carry intake and exhaust valves in stock and oversized diameters, from stainless steel to titanium and sodium-filled options, along with valvetrain components like valve guides, seals, and keepers. You'll also find PCV valves, wastegate valves, blow-off valves, check valves, and fuel system valves—all from manufacturers who understand the heat, pressure, and fatigue cycles these parts endure.
How to choose:
- Match the valve to your cylinder head's seat dimensions and stem diameter—always verify against your engine builder's specs or OE measurements.
- For forced induction or high-rpm builds, consider upgraded materials and multi-angle valve jobs to improve flow and heat dissipation.
- When replacing a failed valve, inspect the guide, seat, and related components; a dropped valve is often a symptom, not the root cause.
- System-specific valves (PCV, wastegate, etc.) should match the intended boost, vacuum, or pressure levels exactly; a wrong spring rate or seal material can cause drivability issues or even engine damage.
Whether you're lapping in a single replacement or assembling a full valvetrain for a race motor, we have the precision components to keep everything sealing and flowing as designed.
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Fits Toyota Supra models equipped with the 2JZ-GTE engine. These Supertech Inconel exhaust valves are specifically engineered for high-performance applications where extreme heat and exhaust gas temperatures (EGTs) are a constant factor.
Built to withstand the rigors of high-boost turbocharged setups, these valves utilize Inconel 751, a nickel-base alloy known for its exceptional strength and heat resistance. This material ensures that the valves maintain their structural integrity and seat properly even under intense thermal stress that would cause standard stainless steel valves to fail.
- Material: Inconel 751 Nickel-Base Alloy
- Engine Compatibility: Toyota 2JZ-GTE
- Application: Exhaust Side
- Quantity: Full Set of 12 Valves
- Manufacturer Part Number: TEVI-1014-12
Engineered for high-performance Toyota 1JZ-GTE engines, this set of 12 Supertech exhaust valves (TEVI-1008-12) provides the thermal stability required for aggressive turbocharged applications. These valves are manufactured from Inconel 751, a nickel-based superalloy specifically chosen for its exceptional strength and oxidation resistance at extreme temperatures.
Unlike standard stainless steel valves that may fatigue under high exhaust gas temperatures (EGTs), these Inconel units are designed to withstand the heat generated by increased boost levels, anti-lag systems, and sustained high-RPM operation. Each valve is precision-machined to ensure consistent tolerances and a reliable seal for optimal cylinder compression.
- Material: Inconel 751 Superalloy
- Application: Toyota 1JZ-GTE engines
- Quantity: Full set of 12 exhaust valves
- MPN: TEVI-1008-12
- Ideal for high-boost, forced induction, and nitrous-equipped builds
Upgrade your cylinder head with this set of eight Supertech black nitrided intake valves, specifically engineered for the Subaru EJ25 engine. These valves are designed to meet the demands of high-performance and forced-induction builds where standard OE components may fail under increased thermal and mechanical stress.
Supertech uses a black nitriding process to create a hardened surface layer. This treatment significantly reduces friction between the valve stem and the valve guide, while improving wear resistance against the valve seat. The result is a more durable valvetrain component that maintains tight tolerances over a longer service life, essential for consistent airflow and compression.
- Engine Application: Subaru EJ25
- Valve Type: Intake
- Surface Treatment: Black Nitrided for superior hardness and reduced friction
- Material: High-strength stainless steel construction
- Quantity: Complete set of 8 valves
- Manufacturer Part Number: SIVN-1016-8
Fits Subaru EJ20 and EJ25 engines.
These Supertech Black Nitrided intake valves are engineered for high-performance Subaru EJ-series builds requiring increased airflow and superior component durability. Each valve features a specialized black nitriding treatment, which significantly hardens the surface and reduces friction for improved guide life and heat resistance. These +1mm oversize valves are designed to maximize volumetric efficiency in engines with modified or ported cylinder heads.
- Brand: Supertech
- Engine Fitment: Subaru EJ20 / EJ25
- Valve Type: Intake
- Head Diameter: +1mm Oversize
- Length: Standard (Std)
- Material/Finish: Black Nitrided for reduced friction and increased surface hardness
- Quantity: Set of 8 valves
- Part Number: SIVN-1014-8
Note: Oversize valves require appropriate valve seat machining for proper fitment and sealing during installation.
Fits Subaru EJ20 and EJ25 engines.
This set of 8 Supertech intake valves is engineered for high-performance Subaru EJ-series builds that demand superior valvetrain durability. Each valve is manufactured from one-piece forged stainless steel and undergoes a specialized black nitriding process. This treatment creates a high surface hardness and a smooth finish, significantly reducing friction within the valve guide while improving resistance to wear and heat-cycling fatigue.
Designed to withstand the stresses of increased boost and higher RPM ranges, these valves are a direct upgrade for performance-oriented EJ20 and EJ25 cylinder heads. The micro-polished stems ensure minimal parasitic drag and consistent operation under extreme thermal loads.
- Manufacturer Part Number: SIVN-1010-8
- Finish: Black Nitrided coating for reduced friction and increased hardness
- Construction: One-piece forged stainless steel
- Valve Type: Intake
- Quantity: Set of 8
- Fitment: Subaru EJ20 / EJ25 engines
Fits Subaru EJ20 and EJ25 engines.
This set of 8 Supertech Black Nitrided exhaust valves is engineered to handle the high thermal loads and increased cylinder pressures common in performance Subaru EJ-series builds. The black nitriding process creates a surface finish that is harder and smoother than standard chrome plating, resulting in significantly reduced friction within the valve guide and superior heat dissipation.
Designed for durability in high-boost and high-RPM environments, these valves provide a reliable solution for both street and track applications. The specialized coating helps prevent galling and stem wear, ensuring a longer valvetrain service life and consistent sealing performance.
- Manufacturer Part Number: SEVN-1010-8
- Valve Type: Exhaust
- Quantity: Set of 8
- Series: Black Nitrided
- Engine Fitment: Subaru EJ20, EJ25
Fits Toyota FR-S and Subaru BRZ.
Engineered to withstand the extreme thermal loads of high-performance racing, this set of eight Supertech Inconel exhaust valves (SEVI-1050-2-8) is a critical upgrade for the FA20 engine. Unlike standard stainless steel, Inconel nickel-base superalloys maintain their structural integrity and resist oxidation at the significantly higher exhaust gas temperatures (EGTs) typically found in turbocharged, supercharged, or high-compression naturally aspirated builds.
- Material: High-strength Inconel alloy for superior heat resistance
- Application: Exhaust side only
- Engineered for high-RPM and forced induction environments
- Quantity: Set of 8 valves
- Manufacturer Part Number: SEVI-1050-2-8
Fits Subaru EJ25 engines.
Designed for the extreme thermal loads of high-performance and forced-induction builds, these Supertech exhaust valves are manufactured from Inconel 751. This nickel-base superalloy is specifically chosen for its ability to maintain structural integrity and resist oxidation at temperatures that would compromise standard stainless steel valves. Whether you are building a high-boost EJ25 or a dedicated track engine, these valves provide the heat resistance necessary for long-term reliability.
Each valve is precision-machined to ensure a perfect seat-to-valve seal and optimized flow within the cylinder head. These are direct replacements for worn or factory-spec valves when upgrading to more robust internal components.
- Material: Inconel 751 (Nickel-Base Superalloy)
- Application: Subaru EJ25 Engines
- Component: Exhaust Valve
- Quantity: Set of 8
- Manufacturer Part Number: SEVI-1016-8
Fits Subaru EJ20 and EJ25 engines. These Supertech Inconel exhaust valves are engineered to withstand the extreme thermal loads found in high-boost and competition Subaru boxer engines. Manufactured from a specialized nickel-based superalloy, Inconel provides superior resistance to heat-induced fatigue and oxidation compared to standard stainless steel components.
This set of eight +1mm oversize valves increases the effective valve head diameter to improve exhaust flow and cylinder scavenging, making them an essential upgrade for built cylinder heads targeting higher horsepower. Because these are oversize components, professional machining of the valve seats is required for installation. Each valve is precision-ground to ensure tight tolerances and consistent seating under high-stress conditions.
- Material: High-strength Inconel superalloy
- Valve Type: Exhaust
- Head Diameter: +1.00mm Oversize
- Quantity: Set of 8 valves
- Manufacturer Part Number: SEVI-1014-8
Fits Subaru EJ20 and EJ25 engines.
These Supertech Performance exhaust valves are specifically engineered for high-output turbocharged Subaru builds where exhaust gas temperatures (EGTs) reach critical levels. Manufactured from Inconel, a high-strength nickel-based superalloy, these valves maintain structural integrity under extreme thermal stress that would compromise standard stainless steel components.
The defining feature of the SEVI-1010-HS-8 series is the sodium-filled hollow stem. As the valve operates, the liquid sodium transfers heat away from the valve face and through the stem to the valve guide and cylinder head cooling jackets. This improved thermal management reduces the risk of pre-ignition and allows for more aggressive tuning in high-boost EJ20 and EJ25 applications.
- Material: Inconel Superalloy
- Design: Sodium-filled hollow stem for superior cooling
- Quantity: Set of 8 exhaust valves
- Manufacturer Part Number: SEVI-1010-HS-8
Fits Subaru EJ20 and EJ25 engines. These Supertech Inconel exhaust valves are engineered specifically for high-performance applications where extreme cylinder temperatures are the norm, such as high-boost turbocharged or anti-lag setups.
Unlike standard stainless steel valves, Inconel is a high-nickel base alloy that maintains its structural integrity and resists oxidation at much higher thermal thresholds. This makes it an essential upgrade for Subaru builders looking for long-term reliability under heavy thermal load. Each valve is precision-manufactured to exact tolerances for consistent seating and heat dissipation.
- Material: High-Nickel Inconel Alloy
- Application: Subaru EJ20 and EJ25 Engines
- Valve Type: Exhaust
- Quantity: Set of 8
- Manufacturer Part Number: SEVI-1010-8
Engineered for high-performance Nissan RB25 engines, this set of 12 Supertech intake valves features a +1mm oversize head diameter to significantly increase airflow and volumetric efficiency. These valves are a critical upgrade for builds where the factory valve size restricts top-end power delivery.
Each valve is manufactured from high-tensile stainless steel and undergoes a specialized Black Nitriding process. This surface treatment creates a micro-smooth, hardened finish that reduces friction against the valve guide and provides superior resistance to wear and heat-induced corrosion. These attributes are essential for maintaining valvetrain stability in high-RPM or forced-induction applications.
- Fits: Nissan RB25 engines
- Component: Intake Valve
- Sizing: +1.00mm Oversize
- Finish: Black Nitrided coating for reduced friction
- Material: High-strength stainless steel
- Quantity: Set of 12 valves
- Manufacturer Part Number: NIVN-1052-SL-12
Note: Installation of +1mm oversize valves requires professional cylinder head machining to enlarge the valve seats for proper fitment and sealing.
This set of 12 Supertech +1mm oversize (OS) intake valves is engineered specifically for Nissan RB25 24V DOHC engines equipped with hydraulic lifters. These valves are a critical upgrade for high-performance builds, offering increased airflow capacity and superior durability compared to standard OE components.
Each valve undergoes a black nitriding process, which hardens the surface and reduces friction within the valve guide. This treatment significantly enhances wear resistance and thermal stability, making them ideal for high-revving or forced-induction RB25 applications. Precision-machined to exacting tolerances, these valves ensure a reliable seat seal and improved volumetric efficiency.
- Part Number: NIVN-1052-12
- Engine Compatibility: Nissan RB25 24V DOHC (Hydraulic Lifter models only)
- Valve Type: Intake
- Sizing: +1mm Oversize (OS)
- Finish: Black Nitrided for reduced friction and increased hardness
- Quantity: Complete set of 12 valves
Optimized for high-performance builds, this set of 12 Supertech +1mm oversized intake valves is engineered for Nissan VQ37VHR engines. These valves are designed to increase airflow and volumetric efficiency by providing a larger surface area, making them a critical upgrade for high-RPM naturally aspirated or forced induction applications.
Each valve features Supertech's signature black nitriding process, which creates a micro-hardened surface. This treatment significantly reduces friction within the valve guide and provides superior resistance to heat and wear compared to standard chrome plating. The result is a more durable valvetrain capable of withstanding the stresses of competitive driving.
- Fits Nissan VQ37VHR engines
- Valve Type: Intake
- Size: +1mm Oversize
- Material: High-tensile steel with black nitrided finish
- Quantity: Complete set of 12
- Manufacturer Part Number: NIVN-1038-12
- Note: Requires oversized valve seat machining for proper fitment.
Fits Nissan RB26DETT engines.
This set of 12 Supertech intake valves is engineered for high-performance Nissan RB26DETT builds that require increased volumetric efficiency and superior valvetrain durability. Featuring a +1mm oversize head diameter, these valves are an essential upgrade for ported cylinder heads where maximizing airflow is the primary objective. Each valve undergoes a specialized black nitriding process, which creates a hardened surface that significantly reduces friction and improves wear resistance within the valve guides compared to traditional chrome-plated alternatives.
- Application: Nissan RB26DETT
- Valve Type: Intake
- Sizing: +1mm Oversize
- Material Treatment: Black Nitrided
- Quantity: Set of 12 valves
- Manufacturer Part Number: NIVN-1032-L-12
Fits Nissan RB26DETT engines.
Supertech Performance intake valves are engineered for high-performance applications where valvetrain reliability and heat resistance are paramount. These valves undergo a specialized black nitriding process, creating a surface finish that is harder and smoother than traditional chrome plating. This results in significantly reduced friction within the valve guide, improved heat dissipation, and increased resistance to wear under the high-stress conditions typical of turbocharged RB26 builds.
Each valve is designed to meet strict tolerances, ensuring a precise fit and superior sealing within the cylinder head. This complete set of 12 intake valves provides a direct upgrade for the 2.6L inline-six engine, supporting higher RPM limits and increased power demands.
- Manufacturer Part Number: NIVN-1030-12
- Engine Application: Nissan RB26DETT
- Valve Type: Intake
- Surface Treatment: Black Nitrided
- Quantity: Set of 12
Fits 1990-1996 Nissan 300ZX models equipped with the VG30DE and VG30DET engines.
Supertech Performance intake valves are engineered for high-performance builds and forced induction applications where thermal management and valvetrain stability are critical. These +0.5mm oversize valves provide increased surface area for improved volumetric efficiency, requiring professional machine work to the valve seats for proper installation.
Each valve is manufactured from high-tensile forged stainless steel and undergoes a specialized black nitriding process. This treatment creates a micro-hardened surface that is smoother than traditional chrome plating, significantly reducing friction within the valve guides and enhancing resistance to heat and wear during high-RPM operation.
- Manufacturer Part Number: NIVN-1017-12
- Valve Type: Intake
- Head Diameter: +0.5mm Oversize
- Material: Forged Stainless Steel
- Surface Treatment: Black Nitrided
- Quantity: Set of 12
Fits Nissan 240SX with the KA24DE engine.
Supertech Performance intake valves are engineered for high-performance applications where increased airflow and thermal stability are critical. These valves undergo a Black Nitriding treatment, which creates a significantly harder surface and a smoother finish. This process reduces friction within the valve guides and improves overall component durability. The +0.5mm oversize head diameter is intended for cylinder heads that have been machined to accept larger valves, providing improved volumetric efficiency for KA24DE builds.
- Manufacturer Part Number: NIVN-1010-8
- Valve Type: Intake
- Head Diameter: +0.5mm Oversize
- Surface Treatment: Black Nitrided
- Quantity: Set of 8
Fits Nissan 240SX models equipped with the KA24DE engine.
This set of 8 Supertech Performance intake valves is engineered for high-performance builds requiring superior heat resistance and valvetrain longevity. Each valve undergoes a specialized black nitriding process, creating a hardened, micro-smooth surface. This treatment significantly reduces friction within the valve guide and provides better protection against seat erosion and corrosion compared to traditional chrome-plated valves.
- Surface Treatment: Black Nitrided for increased hardness and reduced friction
- Material: Forged stainless steel construction for high-heat durability
- Quantity: Set of 8 intake valves
- Engine Fitment: Nissan 2.4L KA24DE (DOHC)
- Manufacturer Part Number: NIVN-1009-8
Designed to maintain tight tolerances under extreme conditions, these valves are an essential upgrade for both refreshed street engines and high-RPM racing applications.
Fits Nissan SR20DE and SR20DET engines.
Engineered for high-performance builds and forced-induction applications, these Supertech intake valves feature a black nitrided finish. This specialized treatment hardens the surface to reduce friction and improve wear resistance in the valve guides. The +1mm oversize head diameter provides increased surface area for improved flow characteristics, making these valves an essential upgrade for ported cylinder heads and high-RPM race engines.
- Manufacturer Part Number: NIVN-1007-8
- Valve Type: Intake
- Sizing: +1mm Oversize
- Material/Finish: Black Nitrided
- Quantity: Complete set of 8 valves
Fits Nissan SR20VE engines.
This set of 8 Supertech Performance black nitrided intake valves (MPN: NIVN-1005-VE-8) is engineered to withstand the rigors of high-RPM performance and forced induction applications. The black nitriding process creates a hardened surface that significantly reduces friction within the valve guide while providing superior resistance to wear and thermal fatigue compared to standard chrome plating.
- Engine Application: Nissan SR20VE
- Valve Type: Intake
- Surface Treatment: Black Nitrided for reduced friction and improved surface hardness
- Quantity: Full set of 8 valves
- Manufacturer Part Number: NIVN-1005-VE-8
Each valve is precision-machined to strict tolerances, ensuring reliable seating and consistent airflow. This kit is a direct replacement for worn or damaged factory valves in performance-oriented SR20VE cylinder head builds.
Fits Nissan SR20DE and SR20DET engines.
This set of 8 Supertech intake valves is engineered to meet the high-performance demands of the Nissan SR20 engine family. These valves feature a specialized black nitriding treatment, a process that hardens the material surface and reduces friction within the valve guides. This results in significantly improved wear resistance and better heat dissipation compared to standard chrome-plated valves, making them an essential upgrade for high-RPM and turbocharged applications.
Each valve is precision-manufactured to ensure consistent tolerances and a reliable seat seal for optimized cylinder compression. These are designed as a performance replacement for factory valves in 16-valve SR20 cylinder heads.
- Manufacturer Part Number: NIVN-1005-8
- Valve Type: Intake
- Surface Finish: Black Nitrided
- Quantity: Complete set of 8 intake valves
- Engine Compatibility: Nissan SR20DE and SR20DET
Fits Nissan RB25 DOHC NEO engines.
Engineered for high-stress and high-temperature environments, this set of 12 Supertech exhaust valves is manufactured from Inconel 751 nickel-base alloy. This material is specifically chosen for high-output or turbocharged builds where exhaust gas temperatures often exceed the limits of standard stainless steel. These valves feature a 30.65mm head diameter, providing a +1mm oversize to enhance exhaust flow and cylinder scavenging for increased performance.
- Manufacturer Part Number: NEVI-1052-NEO-12
- Material: Inconel 751 Nickel-Base Alloy
- Head Diameter: 30.65mm (+1.00mm oversize)
- Stem Diameter: 5.96mm
- Overall Length: 97.65mm
- Quantity: Set of 12 valves
Fits Nissan RB25DET engines equipped with hydraulic lifters.
Designed for high-heat forced induction applications, these Supertech Inconel exhaust valves provide the thermal stability and structural integrity required for high-performance RB25DET builds. The +1mm oversize head diameter increases flow potential, making them ideal for engines with ported heads and upgraded turbochargers. Please note that +1mm oversize valves require professional machine work to the valve seats for proper installation and sealing.
- Manufacturer Part Number: NEVI-1052-12
- Material: Inconel (High-nickel superalloy for extreme exhaust temperatures)
- Head Diameter: +1mm Oversize
- Application: Exhaust side only
- Compatibility: Specifically for RB25DET cylinder heads with hydraulic lifters
- Quantity: Set of 12 valves
Engineered for the high-thermal demands of performance builds, this set of Supertech Inconel exhaust valves is designed specifically for the Nissan VQ37VHR engine (3.7L V6). These +1mm oversize valves provide increased flow capacity, making them an essential upgrade for high-RPM naturally aspirated engines or forced induction applications where exhaust gas temperatures (EGTs) are significantly elevated.
- Manufactured from Inconel alloy for exceptional heat resistance and durability in extreme conditions
- +1mm oversize diameter for improved exhaust scavenging (requires cylinder head machining for proper fitment)
- Precision-machined to ensure strict tolerances and optimal valve-to-guide fitment
- Directly replaces factory valves in high-output Nissan 370Z, G37, and Q50/Q60 builds
- Manufacturer Part Number: NEVI-1038F-12
- Includes: Complete set of 12 exhaust valves
Designed for high-output Nissan RB26 engines, these Supertech Inconel exhaust valves are engineered to withstand the extreme thermal loads of high-boost turbocharged applications. Unlike standard stainless steel, Inconel nickel-base superalloys maintain high tensile strength and resist oxidation at the elevated temperatures common in performance exhaust tracts.
This set of 12 valves features a +1.5mm tip height, allowing for precise valvetrain geometry adjustments in custom builds. Each valve is precision-machined for consistent stem-to-guide clearance and optimal seat sealing to ensure maximum compression and heat dissipation.
- Engine Fitment: Nissan RB26
- Material: Inconel (High-Heat Nickel Alloy)
- Head Diameter: 31.15mm
- Stem Diameter: 6.94mm
- Overall Length: 102.7mm
- Tip Height: +1.5mm
- Quantity: Set of 12
- Requirement: Requires RET-NRB60-TS-2 retainers
- Manufacturer Part Number: NEVI-1032-7-L-12
This set of 12 Supertech Performance exhaust valves is engineered for the Nissan RB26 engine, providing the thermal resilience required for high-output turbocharged builds. Manufactured from Inconel, a nickel-based superalloy, these valves are designed to withstand the extreme exhaust gas temperatures (EGTs) common in forced induction applications that exceed the limits of standard stainless steel.
Featuring a +1mm oversize head diameter, these valves are intended for competition use and require appropriate valve seat machining. Each valve is precision-ground to strict tolerances to ensure a reliable seal and optimal gas flow across the cylinder head. These are an essential upgrade for builders seeking to improve valvetrain durability under high-boost conditions.
- Engine Fitment: Nissan RB26
- Valve Type: Exhaust
- Material: Inconel Superalloy
- Head Diameter: 31.15mm (+1mm Oversize)
- Stem Diameter: 6.94mm
- Overall Length: 101.20mm
- Quantity: Set of 12
- Manufacturer Part Number: NEVI-1032-7-12
Engineered for high-heat, high-pressure environments, this set of 12 Supertech Inconel exhaust valves is specifically designed for the Nissan RB26 engine. These valves are manufactured from a nickel-based superalloy (Inconel), providing the thermal stability required for turbocharged applications where exhaust gas temperatures can exceed the limits of standard stainless steel.
- Fits Nissan RB26 engines
- Material: Inconel (Nickel-based superalloy)
- Head Diameter: 30.15mm
- Stem Diameter: 6.94mm
- Overall Length: 101.60mm
- Quantity: Set of 12 valves
- Manufacturer Part Number: NEVI-1030-7-12
Supertech exhaust valves are precision-machined to ensure consistent flow and reliable seating, making them an essential upgrade for high-horsepower RB26 builds or standard rebuilds requiring superior heat resistance.
Fits Nissan VG30DE and VG30DET engines.
These Supertech performance exhaust valves are engineered specifically for high-stress applications such as turbocharging or high-compression builds. Manufactured from Inconel 751, a nickel-based superalloy, these valves are designed to maintain structural integrity and resist oxidation in extreme heat environments where standard stainless steel might fail.
This set features a +0.5mm oversize head diameter, providing increased surface area for optimized flow characteristics when combined with appropriate cylinder head machining. These are a direct high-performance replacement for worn or standard OE valves in the VG30 platform.
- Material: Inconel 751 Nickel-Base Superalloy
- Valve Type: Exhaust
- Head Diameter: +0.5mm Oversize
- Quantity: Set of 12 valves
- Manufacturer Part Number: NEVI-1017-12
Engineered for high-performance builds, this set of Supertech Inconel exhaust valves is designed to withstand the extreme thermal loads of forced induction or high-RPM Nissan KA24DE engines. Unlike standard stainless steel, the Inconel 751 Nickel-base alloy maintains its structural integrity and resists oxidation at the elevated exhaust gas temperatures (EGTs) common in turbocharged applications.
- Material: Inconel 751 alloy for maximum heat resistance
- Specification: +0.7mm Oversize head diameter
- Quantity: Set of 8 valves
- Compatibility: Fits Nissan 240SX (KA24DE)
- Part Number: NEVI-1011-8
The +0.7mm oversize head increases surface area for improved flow and heat dissipation. Please note that installing oversized valves requires professional cylinder head machining to properly seat the valves. These components are essential for builders seeking reliable valvetrain performance in demanding KA24DE environments.
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