Products

GSC Power Division 6mm stem Super Alloy Exhaust Valves for the Honda B-Series are for those running high horsepower, high EGT set ups that need a valve that will last in 2000°F conditions. The GSC Power Division Exhaust Valves for Honda 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. Those running high horsepower, high EGT set ups that need a valve that will last in 2000°F.

Use with GSC3049-8 Exhaust Valve Guides

GSC Power Division billet WRX camshafts for the USDM STi and WRX with Intake only AVCS. GSC Power Division Billet S1 Camshaft Subaru will not drop any low end power, and will create more power and torque across the entire RPM range. Good for stock frame upgraded turbos or up to 500 WHP upgrades. GSC Power Division Billet S1 Camshaft Subaru Upgraded valve springs are required; beehive valve springs are recommended, but not required. GSC Power Division Billet WRX Camshaft

• Check Pictures for cam placement. Long nose = Left Side, short nose = Right Side
• Due to the lobe size, head castings may need to be filed down slightly for clearance - Please check during install
• Proper break in and running high zinc oil is a must on flat tappet engines
• Must be installed by an experienced technician

GSC Power Division Billet S1 Camshaft Subaru 2008+ STI EJ257B With Dual AVCS. Good for stock frame turbo or up to 500 WHP (GT35R) upgrades. Upgraded valve springs are required; GSC Power Division Billet S1 Camshaft Subaru Beehive valve springs are recommended but not required.

• Check Pictures for cam placement. Long nose = Left Side. Short nose = Right Side
• Due to the lobe size, head castings will need to be filed down slightly for clearance - Please check during install

GSC Power Division billet S2 camshafts for the 08+ Subaru STi EJ257 with Dual AVCS. These cams are built to suit the higher horsepower Subis. With a power range of 500 WHP and up, you need some certain mods to utilize the true potential of the S2s: built motor, with a built/ported head, and a good engine management system. Upgraded valve springs are required; beehive valve springs are recommended but not required. GSC Power Division Billet S2 Camshaft

• Check Pictures for cam placement. Long nose = Left Side, short nose = Right Side
• Due to the lobe size, head castings will need to be filed down slightly for clearance - Please check during install
• Proper break in and running high zinc oil is a must on flat tappet engines
• Must be installed by an experienced technician

GSC Power Division billet S3 camshafts for the Subaru EJ207 version 7 and above with single AVCS. These camshafts are designed for drag use only, fully built engines with a power range of 750-1,300 WHP and an RPM range of 4,500-9,500. Certain engine modifications are required to utilize the true potential of the S3s: built bottom end (closed deck or sleeved), built/ported head, all supporting fueling upgrades, and aggressive dyno tuning. Upgraded valve springs are required. GSC Power Division S3 Camshaft EJ207

• Cylinder head clearancing required. 
• Please maintain 0.020" (0.5mm) minimum clearance from the cylinder head casting

GSC Power Division billet S3 camshafts for the USDM STi and WRX with Intake only AVCS. These camshafts are built to suit high horsepower cars with a power range of 750-1000 WHP and a rev range of 4500-9500 RPMs.  Specific engine modifications are required to utilize the true potential of these camshafts including a built bottom-end (sleeved or closed deck reccomended), built/ported heads (casting must be clearanced for higher lift), and upgraded valve springs.  A standalone ECU or tune with speed density is highly reccomended in order for proper idle characteristics. GSC Power Division Billet S3 Camshaft

• Check Pictures for cam placement. Long nose = Left Side, short nose = Right Side
• Due to the lobe size, head castings will need to be filled down slightly for clearance - Please check during install
• Proper break in and running high zinc oil is a must on flat tappet engines.
• Must be installed by an experienced technician 

GSC Power Division Honda Cam Bolt and Ti Washer Kit for B-Series with aftermarket Cam Gears. Gsc  Many aftermarket cam gears are thicker than the OEM and can cause issues with the short OEM one peice washer/bolt. These Titanium washers are sized to fit aftermarket gears using the supplied bolts. GSC Power Divison Cam Bolt Ti Washer Kit for honda GSC Cam Bolt and Ti Washer Kit for B-Series with aftermarket Cam Gears. Gsc  Many aftermarket cam gears are thicker than the OEM and can cause issues with the short OEM one peice washer/bolt. These Titanium washers are sized to fit aftermarket gears using the supplied bolts. GSC Power Divison Cam Bolt Ti Washer Kit for honda 

GSC Power Division High Pressure 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: 60 psi

GSC Power Division High Pressure Conical Valve Spring with Ti Retainer for Subaru Turbo EJ Platforms includes 16 titanium retainers, 16 conical valve springs, and 16 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.

• Max RPM: 10,000 RPM
• Max boost: 40 psi

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

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

 GSC POWER DIVISION STANDARD INTAKE VALVE GUIDE FOR MITSUBISHI 4G63T WITH STOPPER SINGLE

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

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

GSC POWER DIVISION STANDARD INTAKE VALVE GUIDE FOR MITSUBISHI 4G63T WITH STOPPER SINGLE

GSC Power Division Exhaust Valve Guide FOR MITSUBISHI 4G63T WITH STOPPER SINGLE

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

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

GSC Power-Division Beehive Valve Spring Kit for the EVO 8/9 includes 16 beehive valve springs only. These are a replacement for the factory beehive springs and will work with the factory seat and retainer for an easy and inexpensive upgrade. Our beehive spring is made with an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilities. These springs have the highest level of spring load retention while still maintaining good fatigue throughout the life of the spring. GSC Power Division Beehive Spring 4G63T

• Max RPM: 8200 
• Max boost: 25 psi 

***For EVO 8/9 ONLY***

***For EVO 1-7 and DSM, please see GSC5040 which includes springs and Ti retainers***

Looking to push your Nissan GT-R VR38DETT past the 2200+ HP threshold? GSC Power Division answers the call with the new 6.6mm Valve Stem +1mm Head Diameter Super Alloy Performance Exhaust 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 2500+ HP. These valves are built from advanced super alloy materials, 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 Super Alloy Performance Exhaust Valves deliver. Whether you're hitting the track or upgrading your street machine, these valves provide the reliability and performance you need.

• +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 Beehive Valve Spring Kit with Ti Retainer for the Toyota 2JZ includes 24 titanium retainers and 24 beehive valve springs. Our beehive spring utilizes advanced material heat treatment methods for superior load loss capabilities. These springs have the highest level of spring load retention while still maintaining good fatigue throughout the life of the spring. Beehive springs allow for the use of a smaller, lighter retainer allowing for higher RPM and more valve control.  GSC Power Division Valve Spring 2JZ

• Max RPM: 9,500 RPM
• Max boost: 40 psi

*****MAY NOT FIT ALL VVTi and NON TURBO HEADS***** check for proper fitment of the spring seat base during install. May require GSC5064, GSC5066, or GSC5744 spring kit for proper fitment of non 2jzgte heads

GSC Powe Division billet 7008S2 cams for the Mitsubishi Evo 4-8 are designed for those with a goal of 400-700 WHP. No low end power is lost vs. the stock cams when used with the larger turbos. The S2 cams will show gains of 50-70 WHP over the stock cams, and in some cases more in the higher RPMs.GSC Power Division Evolution S2 Camshafts  Great for 2.0L engines with stock frame turbos revving to 9000 RPMs or for stroker motors revving to 8000 RPMs. The S2 cams are suggested to run on our upgraded beehive valve spring replacement or full beehive valve spring kit with Titanium retainer. GSC Power Division Evolution S2 Camshafts

• Designed for a rev range of 4000-9000 RPMs (2.0L or 3000-8000 2.2L+)
• S2 cams can run on Factory ECU with custom flashing
• Made 100% in the USA

**If using aftermarket cam gears (especially AEM) check the bolt length. Some cam gears are too thick for the OEM bolt on the billet cams, a 40mm underhead length bolt may be necessary in this case**

GSC Power-Division Billet R1 camshaft set for Nissan RB26DETT GSC Power Division R1 camshaft Nissan 

*Reduced base circle = 30.5mm

GSC Power-Division Billet R1.5 camshaft set for Nissan RB26DETT

*Reduced base circle = 30.5mm

GSC Power-Division Billet S1 camshaft set for Nissan RB26DETT

GSC Power-Division Billet S2 camshaft set for Nissan RB26DETT 

GSC Power Division is glad to reveal the newest addition to our camshaft line, the GSC7045 forged billet S2 set for the VR38 powered GT-R. This isn’t just another cam - lots of research and development went into every aspect of these bump sticks. The billet cores for these cams are proprietary and made in house at GSC. We developed stronger, lighter cams with additional fatigue and wear resistance. CNC machining and grinding gives us the most accurate and repeatable camshafts possible, with precision gun drilling down the center of the cam for oil delivery and weight reduction. This far exceeds OEM durability with the performance GSC Power-Division is world famous for. Good for mild builds all the way up to 1500+ HP strokers. GSC Power Division camshaft Nissan VR38DETT

Required for the 7045S2 cams are the GSC5068 Conical valve springs and lightweight titanium retainers. These will keep the valve train happy up to 9800 RPM at 60psi of boost. GSC specifically designed the valve springs and retainers for the high horsepower VR38DETT and utilize different intake and exhaust retainers to keep proper spring seat pressure.

• Head Clearancing may be necessary for lobes 
• Intake: Valve Clearance = 0.30mm±0.025mm
• Exhaust: Valve Clearance = 0.33mm±0.025mm

GSC Power-Division is glad to reveal the newest addition to our camshaft line, the GSC7045 forged billet S3 set for the VR38 powered GT-R. This isn’t just another cam - lots of research and development went into every aspect of these bump sticks. The billet cores for these cams are proprietary and made in house at GSC. We developed stronger, lighter cams with additional fatigue and wear resistance. CNC machining and grinding gives us the most accurate and repeatable camshafts possible, with precision gun drilling down the center of the cam for oil delivery and weight reduction. This far exceeds OEM durability with the performance GSC Power-Division is world famous for. For 1500 + WHP builds only. GSC Power Division S3 camshaft VR38DETT

Required for the 7045S3 are the GSC5068 Beehive valve springs and lightweight titanium retainers, this combination will keep the valve train happy up to 9800 RPM at 60psi of boost. GSC specifically designed the valve springs and retainers for the high horsepower VR38DETT and utilize different intake and exhaust retainers to keep proper spring seat pressure.

• Suggested for stroker or high revving engines
• Head clearancing may be necessary for lobes

GSC Power Division billet S3 camshafts for the 08+ Subaru STi EJ257 with Dual AVCS. These camshafts are built to suit high horsepower cars with a power range of 750-1000 WHP and a rev range of 4500-9500 RPMs.  Specific engine modifications are required to utilize the true potential of these camshafts including a built bottom-end (sleeved or closed deck reccomended), built/ported heads (casting must be clearanced for higher lift), GSC Power Division Billet S3 Camshaft and upgraded valve springs.  A standalone ECU or tune with speed density is highly reccomended in order for proper idle characteristics.

• Check Pictures for cam placement. Long nose = Left Side, short nose = Right Side
• Due to the lobe size head castings will need to be machined down for clearance - Please check during install
• Proper break in and running high zinc oil is a must on flat tappet engines
• Must be installed by an experienced technician
• Check AVCS advance during install - must be done by experienced engine builder

GSC Power-Division Billet S4 camshaft set for Nissan VR38DETT GT-R

GSC Power Division S4 camshaft VR38DETT