Fits 2009-2015 Nissan GT-R models equipped with the VR38DETT engine.

These GSC Power-Division super alloy exhaust valves are engineered to withstand the extreme cylinder pressures and EGTs found in high-performance Nissan GT-R builds. Featuring a 33.15mm head diameter, these valves are +1mm oversized relative to the factory specification, providing significantly increased flow potential for high-horsepower forced induction applications. Each valve is manufactured from a proprietary high-heat super alloy and finished with a precision chrome polish to minimize friction and resist carbon accumulation in the exhaust ports.

• Head Diameter: 33.15mm (+1mm Oversize)
• Quantity: Set of 12 Exhaust Valves
• Material: Heat-Resistant Super Alloy
• Finish: Chrome Polished
• Manufacturer Part Number: 2053-12

Fits 2009-2015 Nissan GT-R (VR38DETT) models including Base, Black Edition, Nismo, Premium, and Track Edition.

Engineered for high-performance VR38DETT builds, this set of GSC Power-Division intake valves features a +1mm oversize head diameter (38.15mm) to significantly improve airflow over factory components. These valves are manufactured from 21-4N stainless steel, a high-strength alloy designed to withstand the extreme heat and combustion pressures found in turbocharged applications. The chrome-polished stems reduce friction within the valve guides, promoting consistent valve timing and longevity during high-RPM operation.

• Manufacturer Part Number: 2052-12
• Material: 21-4N Stainless Steel
• Finish: Chrome Polished Stem
• Head Diameter: 38.15mm (+1mm Oversize)
• Quantity: Set of 12 Intake Valves
• Designed for high-heat, high-boost VR38DETT engines

Fits 2009-2015 Nissan GT-R models (Base, Black Edition, Nismo, Premium, Track Edition) equipped with the VR38DETT engine.

Engineered for high-boost and extreme-heat performance applications, these GSC Power-Division exhaust valves are manufactured from a specialized Super Alloy. This material is specifically designed to maintain structural integrity and seat properly under the intense thermal loads experienced in turbocharged Nissan VR38DETT exhaust ports. Every valve features a high-grade chrome polished finish to reduce friction within the valve guides and prevent carbon buildup on the stem.

• Manufacturer: GSC Power-Division
• Part Number: 2051-12
• Material: Proprietary Super Alloy for high-heat resistance
• Finish: Chrome Polished
• Head Diameter: 32.15mm (Standard/STD Size)
• Quantity: Complete set of 12 exhaust valves
• Compatible Engine: VR38DETT

Fits 2009-2015 Nissan GT-R (VR38DETT) including Base, Black Edition, Nismo, Premium, and Track Edition models.

GSC Power-Division 21-4N Chrome Polished Intake Valves are engineered to withstand the extreme thermal and mechanical stresses of high-output VR38DETT builds. These valves are manufactured from premium 21-4N stainless steel and feature a swirl-polished finish to improve airflow and reduce carbon buildup on the valve face. The chrome-polished stem reduces friction within the valve guide for smoother operation at high RPM.

Designed as a direct replacement for factory units, these 37.15mm valves maintain the standard head size, making them an ideal choice for refreshing a cylinder head without requiring oversized machining. Every valve is precision-ground to ensure a perfect seal and long-term durability in forced-induction environments.

• Engine: VR38DETT
• Material: 21-4N Stainless Steel
• Head Diameter: 37.15mm (Standard Size)
• Finish: Chrome Polished swirl finish
• Quantity: Set of 12 intake valves
• Manufacturer Part Number: 2050-12

Fits 2009-2015 Nissan GT-R models (VR38DETT).

Built for the extreme demands of the VR38DETT engine, this GSC Power-Division intake valve is constructed from high-strength 21-4N stainless steel alloy. The chrome polished finish reduces friction within the valve guide and resists carbon accumulation on the tulip, promoting cleaner airflow and improved durability. This standard-diameter (STD) replacement is designed to maintain factory geometry while offering superior material resilience for high-performance applications.

• Material: 21-4N Stainless Steel Alloy
• Finish: Chrome Polished
• Head Diameter: 37.15mm (Standard Size)
• Quantity: Sold Individually (Single)
• Manufacturer Part Number: 2050-01

Fits Honda K-Series K20 and K24 VTEC engines.

Engineered for high-performance applications, the GSC Power-Division chrome polished intake valves are designed to improve airflow and durability in Honda VTEC cylinder heads. These standard-sized (35mm) valves feature a polished finish that reduces friction and helps prevent carbon buildup, ensuring consistent sealing and performance under high-RPM conditions.

• Precision manufactured for exact fitment in K20 and K24 VTEC cylinder heads
• 35mm standard (STD) head diameter
• Chrome polished finish for reduced friction and improved heat resistance
• Compatible with factory and aftermarket valve guides and seats
• Manufacturer Part Number: 2042-8
• Includes a complete set of 8 intake valves

Fits Honda K-Series K20 and K24 VTEC engines.

GSC Power-Division chrome polished exhaust valves are engineered to withstand the high-stress environment of performance K-Series builds. These valves feature a precision-ground finish to reduce friction and improve heat dissipation, ensuring consistent sealing and reliable airflow across the VTEC powerband. As a standard (STD) size replacement, they are designed for builders seeking a high-quality upgrade over factory components without changing the valve seat geometry.

• Head Diameter: 30mm (Standard Size)
• Material: High-strength alloys with a chrome polished finish for reduced friction
• Application: Specifically for Honda K20 and K24 VTEC cylinder heads
• Configuration: Exhaust side only
• Quantity: Complete set of 8 valves
• Manufacturer Part Number: 2041-8

Fits Honda B16A, B17A, and B18C engines.

These GSC Power-Division exhaust valves are engineered to handle the high-RPM and thermal demands of B-series VTEC cylinder heads. Manufactured from high-tensile chrome alloy, they provide superior durability and resistance to heat-cycling compared to standard components. With a 28mm head diameter and 6mm stem diameter, these valves are a precise fit for performance rebuilds using factory-style guides and seats.

• Material: High-tensile Chrome Alloy
• Head Diameter: 28mm
• Stem Diameter: 6mm
• Compatible Engines: B16A, B17A, B18C
• Quantity: Set of 8 valves
• Manufacturer Part Number: 2039-8

Fits Honda B-Series VTEC engines including B16A, B17A, and B18C.

GSC Power-Division chrome polished intake valves are engineered to enhance induction flow and durability in high-performance Honda cylinder heads. These valves feature a 34mm head diameter, providing a +1mm oversize over factory specifications to increase volumetric efficiency. The chrome polished finish is designed to reduce friction within the valve guide and resist carbon buildup on the valve face and stem during high-temperature operation.

• Engineered for Honda B16A, B17A, and B18C VTEC engines
• 34mm head diameter (+1mm oversize)
• Chrome polished finish for reduced friction and carbon resistance
• Precision-machined for consistent tolerances and seating
• Complete set of 8 intake valves
• Manufacturer Part Number: 2034-8

Fits Honda B-Series VTEC engines including B16A, B17A, and B18C.

These GSC Power-Division P-D series exhaust valves are engineered for high-performance Honda B-Series VTEC cylinder heads. The chrome polished finish reduces friction and helps prevent carbon buildup, ensuring consistent performance at high RPMs. This specific set features a 29mm head diameter, providing a +1mm oversize over factory specifications to optimize exhaust gas flow in ported or high-output builds.

• Head Diameter: 29mm (+1mm Oversize)
• Finish: Chrome Polished
• Engine Fitment: Honda B16A, B17A, and B18C VTEC
• Quantity: Set of 8 Exhaust Valves
• Manufacturer Part Number: 2033-8

Upgrade your cylinder head with this set of GSC Power-Division chrome polished intake valves, specifically engineered for the high-revving Honda B-Series VTEC platform. These valves are designed to meet or exceed factory specifications while providing the durable finish required for performance applications.

Fits Honda B-Series VTEC engines including B16A, B17A, and B18C.

• Manufacturer Part Number: 2032-8
• Head Diameter: 33mm (Standard Size)
• Finish: Chrome Polished for reduced friction and wear
• Engine Application: Honda B16A, B17A, B18C VTEC
• Component Type: Intake Valve
• Quantity: Set of 8

Fits Honda B-Series VTEC B16A, B17A, and B18C engines.

These GSC Power-Division Chrome Polished exhaust valves are engineered to replace worn factory components or upgrade your cylinder head for improved flow and durability. Featuring a 28mm standard head diameter, these valves provide a direct-fit solution for high-performance Honda engine builds requiring precise tolerances and reliable heat dissipation.

• Standard 28mm head diameter (STD)
• Chrome polished finish designed to reduce friction and carbon accumulation
• Compatible with B16A, B17A, and B18C VTEC cylinder heads
• Precision manufactured for consistent stem-to-guide clearance and seat contact
• Manufacturer Part Number: 2031-8
• Complete set of 8 exhaust valves

Designed for high-performance Mitsubishi 4B11T engines, this set of eight GSC Power-Division Super Alloy exhaust valves is built to withstand the extreme thermal loads found in high-boost, forced-induction applications. These valves feature a 30mm head diameter, providing a +1mm oversize over factory specifications to significantly improve exhaust flow and cylinder scavenging when paired with professional cylinder head machining.

The proprietary Super Alloy construction offers superior heat resistance compared to standard stainless steel, preventing valve head deformation under intense combustion temperatures. Each valve is chrome polished to a mirror finish, reducing stem friction and minimizing carbon build-up for long-term seat consistency and performance.

• Fits Engine: Mitsubishi 4B11T
• Head Diameter: 30mm (+1mm Oversize)
• Material: High-Temperature Super Alloy
• Finish: Chrome Polished
• Quantity: Set of 8
• Manufacturer Part Number: 2027-8

Fits Mitsubishi 4B11T engines found in the 2008-2015 Lancer Evolution X and Ralliart.

GSC Power-Division 21-4N stainless steel intake valves are engineered to withstand the extreme thermal loads and high-stress environments of performance turbocharged engines. These valves feature a meticulous chrome polished finish that reduces friction within the valve guides and helps prevent carbon accumulation on the valve face. At 36mm, these valves are +1mm oversize compared to factory specifications, providing the increased surface area and flow capacity required for high-horsepower builds and ported cylinder heads.

• Manufactured from 21-4N stainless steel for exceptional heat resistance
• 36mm head diameter (+1mm oversize)
• Chrome polished finish for smoother operation and reduced carbon buildup
• Swirl-polished heads for optimized induction flow
• Sold as a complete set of 8 intake valves
• Manufacturer Part Number: 2024-8

Optimize your valvetrain with this set of GSC Power-Division exhaust valves, specifically engineered for the Mitsubishi 4B11T engine. These valves feature a 30mm head diameter, providing a +1mm oversize profile that increases flow capacity for high-horsepower and high-boost applications. The chrome polished finish is designed to minimize friction within the valve guides and prevent carbon accumulation on the valve head face.

These components are built to withstand the extreme thermal loads characteristic of the 4B11T platform. Note that +1mm oversize valves require professional cylinder head machining to ensure the valve seats are properly enlarged for a perfect seal. This set includes eight exhaust valves, providing a complete solution for a single cylinder head.

• Engine Compatibility: Mitsubishi 4B11T
• Valve Type: Exhaust
• Head Diameter: 30mm (+1mm Oversize)
• Finish: Chrome Polished
• Quantity: Set of 8
• Manufacturer Part Number: 2023-8

Fits select 2006-2015 Mitsubishi Lancer Evolution, Lancer Ralliart, and Hyundai Genesis Coupe models (2.0T).

This GSC Power-Division high-performance intake valve is engineered to withstand the extreme thermal and mechanical stresses found in high-output turbocharged engines. Manufactured from 21-4N stainless steel, this valve provides exceptional heat resistance and structural integrity. The stem features a chrome polished finish, which significantly reduces friction and wear within the valve guide for improved longevity and smoother operation.

Designed as a precision replacement with a standard 35mm head diameter, this valve is an essential upgrade for engine builds requiring superior material properties over factory components while maintaining original equipment specifications.

• Manufacturer Part Number: 2022-01
• Material: 21-4N Stainless Steel
• Head Diameter: 35mm (STD)
• Finish: Chrome Polished Stem
• Engine Compatibility: 4B11T / 2.0T
• Quantity: Sold Individually

Fits Mitsubishi 4B11T engines. These GSC Power-Division exhaust valves are engineered to withstand the increased thermal loads of high-performance turbocharged applications. Each valve is manufactured with a 29mm head diameter (standard size), making them a direct replacement for worn or damaged OE components during a cylinder head rebuild.

The chrome polished finish reduces friction and carbon buildup while the swirl-polished heads optimize exhaust gas flow out of the combustion chamber. These valves are designed for maximum durability and consistent sealing, providing a reliable valvetrain solution for Evo X and Ralliart platforms.

• Engine Application: Mitsubishi 4B11T
• Valve Type: Exhaust
• Head Diameter: 29mm (Standard)
• Finish: Chrome Polished
• Quantity: Set of 8
• Manufacturer Part Number: 2021-8

Engineered for high-performance EJ-series builds, these GSC Power-Division Super Alloy exhaust valves (MPN 2017-8) are designed to withstand the extreme thermal stresses of forced induction. The Super Alloy construction offers superior heat resistance compared to standard stainless steel, making these an essential upgrade for high-horsepower Subaru EJ205, EJ207, and EJ257 engines.

These valves feature a 33mm head diameter, providing a +1mm oversize profile to improve exhaust flow when paired with appropriate cylinder head machining. The chrome polished finish reduces friction and helps prevent carbon buildup on the valve face and stem.

• Material: High-temperature Super Alloy for extreme exhaust gas environments
• Finish: Chrome polished for durability and reduced friction
• Head Diameter: 33.0mm (+1mm oversize)
• Quantity: Set of 8 exhaust valves
• Engine Compatibility: EJ205, EJ207, and EJ257 engines
• Manufacturer Part Number: 2017-8

Fits Subaru EJ205, EJ207, and EJ257 engines.

Designed to withstand the extreme thermal loads of high-performance turbocharged EJ-series boxer engines, these GSC Power-Division exhaust valves are manufactured from a high-strength Super Alloy. The chrome-polished finish helps minimize carbon buildup and reduces friction within the valve guide, while the standard 32mm head diameter allows for a direct-replacement fit using factory valve seats. These valves provide the superior heat resistance and structural integrity required for high-boost applications where standard stainless steel components may reach their limit.

• Manufacturer Part Number: 2015-8
• Material: High-Temperature Super Alloy
• Finish: Chrome Polished
• Head Diameter: 32mm (Standard Size)
• Engine Compatibility: EJ205, EJ207, EJ257
• Quantity: Set of 8 Exhaust Valves

Fits 1999-2015 select Subaru Impreza, WRX STI, and Saab 9-2X Aero (EJ205 / EJ207 / EJ257).

The GSC Power-Division EJ series exhaust valve is engineered to withstand the extreme thermal loads of high-output turbocharged Subaru engines. Built from a high-performance Super Alloy material, this 32mm standard (STD) head valve provides superior heat resistance compared to factory stainless steel, making it an essential upgrade for EJ205, EJ207, and EJ257 builds. The chrome polished finish reduces carbon accumulation on the valve face while ensuring a smooth, precision surface for optimal exhaust flow and reliable seating.

• Part Type: Exhaust Valve
• Material: Super Alloy for extreme heat resistance
• Head Diameter: 32mm (Standard Size)
• Finish: Chrome Polished
• Engine Compatibility: EJ205, EJ207, EJ257
• Manufacturer Part Number: 2015-01

Fits Subaru EJ205, EJ207, and EJ257 engines.

GSC Power-Division chrome polished intake valves are precision-engineered for high-performance Subaru EJ-series builds. These +1mm oversized valves feature a 37mm head diameter, designed to maximize airflow and improve volumetric efficiency in modified cylinder heads. The chrome-polished finish reduces friction within the valve guide and helps prevent carbon buildup on the valve face and stem, ensuring long-term durability under high-heat and high-stress conditions.

• Head Diameter: 37mm (+1mm Oversize)
• Material Finish: Chrome Polished
• Engine Compatibility: Subaru EJ205, EJ207, EJ257
• Components Included: Set of 8 intake valves
• Manufacturer Part Number: 2014-8

Fits select 1999-2015 Subaru Impreza, WRX, and WRX STI, as well as 2005 Saab 9-2X Aero models equipped with EJ205, EJ207, or EJ257 engines.

This GSC Power-Division intake valve is designed for high-performance engine builds requiring increased airflow and superior thermal stability. Featuring a 37mm head diameter (+1mm oversize), this valve is precision-machined and finished with a chrome polish to reduce friction and minimize carbon buildup on the valve face and stem. These valves are a direct upgrade for factory components, providing the durability needed for forced induction and high-RPM applications.

• Part Number: 2014-01
• Head Diameter: 37mm (+1mm Oversize)
• Finish: Chrome Polished
• Quantity: Sold Individually (Single)
• Compatibility: Subaru EJ205, EJ207, and EJ257 cylinder heads

These GSC Power-Division exhaust valves are designed for high-performance Subaru EJ Series engines, specifically targeting EJ205, EJ207, and EJ257 builds requiring increased flow capacity. Featuring a 33mm head diameter (+1mm oversize), these valves are an essential upgrade for cylinder heads that have been ported to maximize exhaust gas scavenging.

Each valve is manufactured to exacting tolerances and finished with a chrome polish. This smooth surface reduces friction within the valve guide and resists carbon shorthand, ensuring consistent performance under the high thermal loads found in turbocharged EJ platforms. These valves serve as a direct performance replacement for factory units when machining for the oversized head diameter.

• Engine Fitment: Subaru EJ205, EJ207, and EJ257
• Head Diameter: 33mm (+1mm oversize)
• Finish: Chrome Polished
• Quantity: Set of 8 exhaust valves
• Manufacturer Part Number: 2013-8

Fits 1999-2015 Subaru Impreza, WRX, WRX STI, and 2005 Saab 9-2X Aero (EJ205/EJ207/EJ257 engines).

GSC Power-Division exhaust valves are engineered to handle the thermal loads and high-stress environments of built Subaru EJ engines. This individual valve features a +1mm oversize head to maximize exhaust flow in ported cylinder heads. The chrome-polished finish reduces friction and helps prevent carbon buildup on the valve face and stem, maintaining consistent performance over the life of the engine.

• Head Diameter: 33mm (+1mm Oversize)
• Engine Compatibility: Subaru EJ205, EJ207, EJ257
• Finish: Chrome Polished
• Quantity: Single Valve
• Manufacturer Part Number: 2013-01

This set of eight GSC Power-Division (P-D) chrome polished intake valves is engineered for high-performance Subaru EJ205, EJ207, and EJ257 engines. Designed as a direct-fit replacement using the standard (STD) 36mm head diameter, these valves provide a smooth surface finish to optimize airflow and resist carbon buildup during the combustion cycle.

Whether you are performing a standard cylinder head refresh or a complete engine rebuild, these valves offer the durability and precision tolerances required for turbocharged EJ-series boxer engines. The chrome polished finish reduces friction within the valve guide and provides the heat resistance necessary for forced induction applications.

• Engine Fitment: Subaru EJ205, EJ207, and EJ257
• Valve Head Diameter: 36mm (Standard Size)
• Finish: Chrome Polished
• Quantity: Set of 8 intake valves
• Manufacturer Part Number: 2012-8

Fits select 1999-2015 Subaru Impreza, WRX, and STI models and 2005 Saab 9-2X Aero (EJ205, EJ207, and EJ257 engines).

This GSC Power-Division chrome polished intake valve is designed as a high-performance replacement for Subaru EJ series cylinder heads. Manufactured to precise tolerances, this valve maintains the standard (STD) 36mm head diameter, making it a direct fit for factory valve seats. The chrome polished finish reduces carbon buildup and friction within the intake port, ensuring consistent airflow and improved thermal resistance during high-RPM operation.

Engineered for durability in both stock and modified Boxer engines, this valve is an essential component for cylinder head refreshes and performance rebuilds. Each valve is sold individually, allowing for precise quantity ordering based on your specific engine needs.

• Manufacturer Part Number: 2012-01
• Head Diameter: 36mm (Standard)
• Finish: Chrome Polished
• Engine Compatibility: EJ205, EJ207, EJ257
• Sold as a single unit

Fits Subaru EJ205, EJ207, and EJ257 engines.

GSC Power-Division exhaust valves are designed to meet the extreme thermal demands of high-performance turbocharged Subaru boxer engines. These 32mm standard-sized valves feature a specialized chrome-polished finish to reduce friction within the valve guides and improve overall airflow characteristics. Precision-machined for a perfect seat, these valves are a critical upgrade for any EJ-series engine rebuild requiring enhanced durability and reliability under high-load conditions.

• Compatible Engines: Subaru EJ205, EJ207, and EJ257
• Head Diameter: 32mm (STD Size)
• Finish: Chrome Polished for reduced guide wear
• Quantity: Set of 8 Exhaust Valves
• Manufacturer Part Number: 2011-8

Fits select 1999-2015 Subaru Impreza, WRX, and WRX STI, and 2005 Saab 9-2X Aero (EJ205 / EJ207 / EJ257 engines).

Maintain the performance and longevity of your cylinder head with this GSC P-D chrome polished exhaust valve. Designed as a direct-fit replacement for the standard 32mm head size, this valve is engineered to withstand the thermal stresses of turbocharged EJ-series engines. The chrome polished finish helps minimize carbon accumulation and improves gas flow, making it an ideal choice for both OEM refreshes and performance builds.

• Manufacturer Part Number: 2011-01
• Valve Type: Exhaust
• Head Diameter: 32mm (Standard Size)
• Finish: Chrome Polished
• Engine Compatibility: Subaru EJ205, EJ207, EJ257
• Quantity: Single Valve

Fits select 1990-2006 Mitsubishi Eclipse, Lancer Evolution, Galant VR-4, Eagle Talon, and Plymouth Laser (4G63T).

GSC Power-Division Super Alloy exhaust valves are engineered to withstand the extreme heat and cylinder pressures of high-output turbocharged 4G63T engines. These valves feature a 31.5mm head diameter—a +1mm oversize compared to factory specs—allowing for significantly improved exhaust flow and scavenging. Constructed from high-strength Super Alloy and finished with a chrome polish for reduced stem-to-guide friction, these valves are an essential upgrade for DSM and Evolution builds pushed beyond stock limits.

• Head Diameter: 31.5mm (+1mm Oversize)
• Material: High-temperature Super Alloy
• Finish: Chrome Polished
• Engine Compatibility: Mitsubishi 4G63T
• Quantity: Set of 8 valves
• Manufacturer Part Number: 2007-8

Fits 1992-2006 Mitsubishi Lancer Evolution I-IX equipped with the 4G63T engine.

Designed for high-horsepower builds and extreme thermal environments, this GSC Power-Division single exhaust valve is manufactured from a proprietary Super Alloy. This specialized material is specifically engineered to withstand the elevated exhaust gas temperatures (EGTs) common in forced induction applications, preventing valve head deformation and ensuring a consistent seal under load.

Featuring a 31.5mm head diameter (+1mm oversize), this valve provides increased flow capacity for ported cylinder heads. The valve face and stem are fully polished to improve flow characteristics and minimize carbon adhesion, while the precision-ground stem ensures tight tolerances within the valve guide for improved heat transfer and longevity.

• Material: High-temperature Polished Super Alloy
• Head Diameter: 31.5mm (+1mm Oversize)
• Engine: Mitsubishi 4G63T
• Quantity: Single Valve
• Manufacturer Part Number: 2007-01