Products

GSC Power-Division High Pressure Conical Valve Spring with Ti Retainer for Subaru Turbo EJ Platforms includes

•  16 Titanium Retainers
• 16 Chromoly Valve Spring Seats. 
• 16 High Pressure Conical Valve Springs

High RPM and High Boost levels are not a problem on these kits. True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits by aftermarket modifications. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPM's, use more aggressive cam profiles, and turn up higher boost pressures.

• Max RPM: 10,000 RPM
• Max boost: 50 psi

GSC Power-Division Conical Valve Spring Kit with Ti Retainer for the Toyota 2JZ & 1JZ includes 24 titanium retainers and 24 conical valve springs. True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits by aftermarket modifications. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles, and turn up higher boost pressures.

• Max RPM: 10,000 RPM
• Max boost: 50 psi

GSC Power-Division Conical Valve Spring Kit with Titanium Retainer for the Nissan VR38DET comes complete with 24 titanium retainers, 24 conical valve springs, and 24 valve spring shims. Conical valve springs, although not a new concept, have proven themselves in the industry, offering several key advantages over traditional spring designs.

One of the primary benefits of conical springs compared to cylindrical or beehive springs is their superior ability to dampen and eliminate valvetrain harmonics. Among these designs, conical springs stand out as frontrunners in ensuring valvetrain harmonic stability. By incorporating varying coil diameters and spacing, conical springs naturally act as harmonic dampers, effectively reducing valvetrain shock. This results in decreased stress, minimized wear, and prolonged lifespan of the included components, a crucial level of protection for modern engines pushed to their physical and mechanical limits by aftermarket modifications.

Each GSC conical spring undergoes a meticulous process, featuring a super-finished surface treatment in addition to our patented, multi-step heat treatment. The result is an exceptionally reliable, high-performance spring that enables users to push higher RPMs, utilize more aggressive cam profiles, and increase boost pressures with confidence.

• Max RPM:  10,000 RPM
• Max boost: 40 psi
• 1,500 HP 

GSC Power-Division Exhaust Valve Guide for Honda B-Series - 6mm, stopper style

• Standard sized sold as set of 8 or individually
• Oversized sold individually as +0.001" and +0.003" 
• Use with seal: GSC1039

GSC Power-Division Exhaust Valve Guide for Nissan RB26DETT/SR20DET GSC Power Division Exhaust Guide SR20DET

• RB26DETT - set of 12
• SR20DET - set of 8
• Standard sized sold as set of 12, set of 8, or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Exhaust Valve Guide for Nissan RB26DETT/SR20DET GSC Power Division Exhaust Guide SR20DET

• RB26DETT - set of 12
• SR20DET - set of 8
• Standard sized sold as set of 12, set of 8, or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power Division Exhaust Valve Guide for Nissan VR38DETT, stopper style GSC Power Division Exhaust Guide VR38DETT

• Standard sized sold as set of 12 or individually
• Oversized sold individually as +0.001" and +0.003" 

Looking to push your Nissan GT-R VR38DETT past the 2200+ HP threshold? GSC Power Division answers the call with the new Flat Face +1mm Head Diameter Stainless Steel Performance Intake Valve. Engineered for extreme airflow, efficiency, and durability under the most punishing conditions.

• Optimized for Extreme Horsepower: Specifically designed to handle the heat and stress of VR38DETT engines pushing 2200+ HP. These valves are built from 21-4N Stainless Steel material, giving them unparalleled resistance to high temperatures and stress.
• Back Cut for Maximum Airflow: The expertly engineered back cut design improves exhaust flow, increasing power output and allowing for higher RPMs—perfect for racing and high-performance setups.
• Micro-Polished Valve Stems: Reduce friction and improve oil retention with micro-polished valve stems, ensuring smoother operation and extending the life of your components, even at peak RPMs.
• Precision Fit with OEM Components: These valves integrate seamlessly with the VR38DETT’s OEM keepers/ locks, and standard aftermarket retainers. GSC Power Division recommends upgrading to new valve locks to prevent material grooving and maximize longevity.

Built for Racers, Designed for Durability

When your engine demands more power and precision, these Stainless Steel Performance Intake Valves deliver. Whether you're hitting the track or upgrading your street machine, these valves provide the reliability and performance you need at extreme HP levels.

• +1mm Head Diameter: For enhanced airflow and increased power potential.
• Sold Individually or in Sets of 12: Whether you need a single replacement or a full set, GSC has you covered.

GSC Power Division Intake Valve Guide for Audi R8 V10/Lamborgini Gallardo V10 GSC Power Division Valve Guide V10

• Standard sized sold as set of 20 or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power Division Intake Valve Guide for Honda K20C1 CTR GSC Power Division Valve Guide K20C1

• Standard sized sold as set of 8 or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for Nissan RB26DETT/SR20DET GSC Power Division Valve Guide Nissan 

• RB26DETT set of 12 
• SR20DET set of 8 
• Standard sized sold as set of 12, set of 8, or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Conical Valve Spring with Ti Retainer for RB26DETT includes 24 titanium retainers, 24 conical valve springs, and 24 chromoly valve spring seats. High RPM and High Boost levels are not a problem on these kits. True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits by aftermarket modifications. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles, and turn up higher boost pressures. GSC Power Division Conical Spring RB26DETT

• Max RPM: 10,000 RPM
• Max boost: 45 psi

GSC Power-Division Conical Valve Spring with Ti Retainer for RB26DETT includes 24 titanium retainers, 24 conical valve springs, and 24 chromoly valve spring seats. High RPM and High Boost levels are not a problem on these kits. True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits by aftermarket modifications. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles, and turn up higher boost pressures. GSC Power Division Single Spring RB26DETT

• Max RPM: 10,000 RPM
• Max boost: 30 psi

GSC Power-Division Standard Exhaust Valve Guide for Mitsubishi 4G63T, stopper style

• Standard sized sold individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Standard Intake Valve Guide for Mitsubishi 4G63T, stopper style

• Standard sized sold  individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Standard Intake Valve Guide for Mitsubishi 4G63T, stopper style

GSC Power Division STD Size Exhaust Valve Toyota 3SGTE

When creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.

Valve Features

• Swirl polished heads for smoother air flow over the valve

• Back cut to reduce valve weight for higher RPM, higher boost pressure, and allow for more aggressive cam profiles without increasing valve spring seat pressures

• Valve stems are micro polished to allow for less oil retention on the stem, which creates less drag on the stem to guide for a smoother motion

• Intake valves are a modified 21-4n stainless and exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity

• Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear

• Valve tip lengths - we have taken extra time to adjust tip heights on the applications to require less tipping of the valve, to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash

• We have also adjusted the keeper groove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits

• Valves will work with an OEM keeper/lock or, when available, our upgraded keeper/lock. It is not mandatory, but it is suggested, that any valve lock not be reused on performance applications due to material grooving

GSC Power-Division Audi Daza/DNWA Engine Super Alloy Performance Exhaust Valves, built for superior airflow, efficiency, and durability in turbocharged and naturally aspirated engines.

GSC Power-Division Super Alloy Exhaust Valves for the B58 and S58 Engines are for those running high horsepower, high EGT set ups that need a valve that will last in 2000°F conditions. The Super Alloy Exhaust valves have chrome polished stems to create a smooth, durable finish for added life and better lubricity, especially when paired with the GSC Manganese bronze valve guides. Strength, heat resistance, and performance are engineered into every valve. Under head dish is maximized for weight savings while swirl polished and backcut heads promote better air flow without sacrificing durability.

GSC Power Division Stem Seals K-Series GSC Power-Division Viton 6mm Exhaust Valve Stem Seals for Honda B, H, and K-Series Engines. These are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance engines.

GSC Power Division Viton Valve Stem Seals for the Nissan VQ35, VR38 and VG30 6mm valve size seal set GSC Power Division stem seal VG30. These are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance engines. Sold as a set of 24