Fits Toyota 2JZ-GTE VVTi engines.

The GSC Power-Division S1 Series Intake Camshaft is engineered to optimize the performance of the Toyota 2JZ-GTE VVTi platform. Designed as a high-performance upgrade, the S1 profile is developed to provide a broader power band and improved throttle response without compromising the engine's street drivability. Each camshaft is precision-ground to exacting tolerances, ensuring reliable timing and consistent valve control for street and track applications.

• Specifically engineered for the Toyota 2JZ-GTE VVTi engine
• S1 Series profile focuses on increased mid-range and top-end power
• Precision-ground construction for timing accuracy and longevity
• Manufacturer Part Number: 7031S1IN

Fits JDM-spec Toyota 2JZ-GTE VVTi engines.

GSC Power-Division S1 camshafts (MPN 7031S1) are engineered specifically for the JDM Toyota 2JZ-GTE VVTi, providing a significant increase in power and torque without sacrificing low-end drivability. These billet cams feature a 269-degree duration for both intake and exhaust, making them an ideal choice for street-driven vehicles or weekend track builds looking for a broader powerband and improved mid-to-high RPM performance.

• Designed specifically for JDM-only 2JZ-GTE VVTi cylinder heads
• Precision-machined from high-quality billet steel cores for maximum durability
• 269/269 advertised duration for enhanced airflow in turbocharged applications
• Compatible with upgraded valve springs for high-RPM reliability
• Manufacturer Part Number: 7031S1

Fits 1993-2002 Toyota Supra models equipped with the VVTI 2JZ-GTE engine.

The GSC Power-Division R2 billet camshaft set is engineered for high-horsepower 2JZ-GTE VVTI builds that require an aggressive profile for maximum top-end performance. CNC-machined from high-quality billet steel cores, these cams offer the increased strength and precision necessary for high-boost, high-RPM applications. The R2 profile is specifically designed to optimize airflow in large-turbo setups, providing a significant increase in power over the factory valvetrain configuration while maintaining the variable valve timing functionality.

• Manufacturer Part Number: 7031R2
• Camshaft Profile: R2 (High-Horsepower/Racing)
• Construction: CNC-machined billet steel
• Engine Compatibility: 2JZ-GTE with VVTI
• Required Hardware: Must be installed with GSC Conical Valve Spring Kit

Designed for the Toyota 2JZ-GTE VVTi engine, the GSC Power-Division R1 camshafts are engineered to provide a significant increase in power and torque for high-performance builds. These cams are CNC-machined from high-quality billet cores to ensure precise tolerances and long-term durability under extreme engine stress.

The R1 profile features a 269/269 duration, optimized for improved airflow and top-end performance. Due to the aggressive lobe profile, these camshafts are not a drop-in replacement and require specific supporting modifications for safe operation.

• Fitment: Toyota 2JZ-GTE VVTi engines
• Series: R1 Profile
• Specs: 269/269 Duration
• Material: Billet Steel Construction
• Requirement: Upgraded valve springs required
• Requirement: Cylinder head lobe clearance required
• Manufacturer Part Number: 7031R1

Fits 1993-1998 Toyota Supra Twin Turbo (2JZ-GTE).

The GSC Power-Division S1 billet camshafts are engineered to enhance the power output of the iconic MK4 Supra 2JZ-GTE engine without compromising street drivability. These 269/269 duration cams are CNC-machined from high-strength billet steel cores to ensure precise tolerances and long-term durability. Designed for street-driven vehicles and mild track builds, the S1 profile provides a broader power band and significant gains in the mid-to-high RPM range.

• Intake Duration: 269°
• Exhaust Duration: 269°
• Material: High-strength CNC-machined billet steel
• Optimized for the factory 2JZ-GTE turbocharger system
• Manufacturer Part Number: 7030S1

Fits 1993-2002 Toyota Supra Turbo models equipped with the 2JZ-GTE engine.

GSC Power-Division R2 Billet Camshafts are engineered for high-output 2JZ-GTE builds that require an aggressive profile beyond the standard S2 series. CNC-machined from high-quality billet steel cores, these cams offer the structural integrity and precision tolerances required for high-RPM stability and heavy boost applications.

The R2 profile is designed to optimize airflow for large-frame turbocharger setups, delivering significant power gains across the upper RPM range while maintaining the durability needed for performance street or track use.

• Material: Billet Steel
• Series: R2 Profile
• Engine Compatibility: Toyota 2JZ-GTE
• Manufacturer Part Number: 7030R2
• Includes: Intake and Exhaust Camshafts

Fits 1999-2014 JDM and Euro Spec Subaru Impreza models with EJ20 engines, including WRX and STi (Note: These are NOT compatible with USA Spec engines).

GSC Power-Division S2 series camshafts are engineered for high-performance builds requiring significant airflow increases in the mid-to-high RPM range. CNC-machined from high-quality billet steel cores, these 272/272 duration cams provide the necessary lift and profile for aggressive turbocharged applications while maintaining the structural integrity required for high-stress street or track environments.

• Manufacturer Part Number: 7027S2
• Series: S2
• Profile: 272 / 272 Duration
• Material: CNC-machined Billet Steel
• Fitment: JDM / Euro Spec EJ20 STi engines only
• Compatibility Note: Will not fit USA Spec engines

Fits select 1999-2014 Subaru Impreza, WRX, and WRX STI models (JDM / Euro Spec STi engines only).

GSC Power-Division S1 Billet Camshafts are designed to enhance the powerband of the EJ20 JDM and Euro Spec STi engines. These Stage 1 (S1) cams utilize a 268/266 duration to provide a significant increase in mid-to-top-end horsepower and torque while maintaining excellent low-end driveability and a smooth idle. CNC-machined from high-quality billet steel cores, these camshafts ensure superior strength and precision tolerances compared to cast alternatives. This set is engineered specifically for JDM/Euro configurations and is not compatible with USA-spec engines.

• Manufacturer Part Number: 7027S1
• Camshaft Profile: S1 (Stage 1)
• Intake Duration: 268 Degrees
• Exhaust Duration: 266 Degrees
• Material: CNC-Machined Billet Steel
• Engine Fitment: Subaru EJ20 JDM / Euro Spec STi
• Compatibility: Not compatible with USA-spec engines

Fits 2008-2021 Subaru WRX STI models equipped with the EJ257 engine and Dual AVCS.

GSC Power-Division S3 camshafts are engineered for high-horsepower Subaru builds that require maximum airflow at high RPM. These S3-profile cams feature a 282/282-degree duration profile designed to push the limits of the EJ257 platform while maintaining compatibility with the Dual Active Valve Control System (AVCS).

• Profile: S3 (Extreme Street/Race)
• Duration: 282° Intake / 282° Exhaust
• Material: CNC machined from billet steel cores
• System: Compatible with Dual AVCS
• Manufacturer Part Number: 7026S3

Each set is precision-ground from a billet blank for superior strength and surface finish. Due to the aggressive lift and duration of the S3 series, upgraded valve springs and professional tuning are required for installation.

Fits 2008-2016 Subaru WRX STI and Impreza WRX STI models equipped with the EJ257 engine and Dual AVCS.

GSC Power-Division S1 billet camshafts are engineered specifically for the EJ257 with Dual AVCS to provide a significant increase in mid-to-top-end power without sacrificing street drivability or idle quality. These cams are an ideal upgrade for street or track vehicles running the factory turbocharger or small-to-mid-sized aftermarket turbos. CNC-ground from new billet steel cores, these camshafts offer superior strength and tighter tolerances compared to traditional regrinds.

• Duration: 266° Intake / 264° Exhaust
• Compatibility: Engineered for Dual AVCS EJ257 systems
• Construction: High-strength billet steel cores
• Profile: S1 street/strip performance
• Installation: Replaces factory camshafts; fits 2008-2016 WRX STI
• Manufacturer Part Number: 7026S1

Fits 2004-2007 Subaru Impreza WRX STI (EJ255/EJ257 USDM).

The GSC Power-Division S3 Billet Camshafts are engineered for high-horsepower Subaru EJ-series builds requiring extreme lift and duration. Designed specifically for USDM EJ255 and EJ257 engines equipped with Intake AVCS, these S3 profile cams feature a 282/282 degree duration to maximize top-end power in competition-oriented setups.

CNC machined from high-quality billet steel for superior strength and durability under high-stress conditions, these camshafts provide the stability needed for aggressive valve train configurations. This set ensures precise valve timing control while maintaining compatibility with the factory Intake AVCS system.

• Engine Compatibility: Subaru EJ255 / EJ257 (USDM)
• Camshaft Profile: S3
• Duration: 282 Intake / 282 Exhaust
• Material: CNC Machined Billet Steel
• System Support: Intake AVCS Compatible
• Manufacturer Part Number: 7025S3

Fits 2004-2007 Subaru Impreza WRX STI equipped with USDM EJ255 or EJ257 engines.

GSC Power-Division S2 series camshafts (7025S2) are designed for high-performance builds that demand a more aggressive profile than the S1 line. These 272/272 duration cams are CNC-machined from high-quality billet steel cores, providing superior strength and profile accuracy compared to cast alternatives. This set is specifically engineered for USDM EJ-series engines utilizing Intake AVCS (Active Valve Control System), optimizing valve timing to improve mid-to-top-end power while maintaining stable idle characteristics.

• Manufacturer Part Number: 7025S2
• Cam Profile: S2 (272/272 Duration)
• Material: CNC-Machined Billet Steel
• System Compatibility: Intake AVCS Only
• Engine Fitment: USDM Subaru EJ255 and EJ257
• Vehicle Fitment: 2004-2007 Subaru Impreza WRX STI

Fits 2004-2007 Subaru Impreza WRX STI models equipped with the USDM EJ255 or EJ257 engine and intake-only AVCS.

GSC Power-Division S1 billet camshafts are engineered for street-driven Subaru engines looking for a broader powerband and increased top-end performance without sacrificing low-end drivability. These cams are machined from new, high-quality billet steel cores rather than reground factory units, ensuring precise tolerances and superior material integrity under high-load conditions.

The S1 profile features a 268-degree intake and 266-degree exhaust duration, specifically optimized to work with the factory USDM intake AVCS (Active Valve Control System). This setup provides a significant increase in horsepower and torque through the mid-to-high RPM range while maintaining a smooth idle and excellent vacuum characteristics for daily driving.

• Intake Duration: 268°
• Exhaust Duration: 266°
• Material: High-strength billet steel
• Compatible with factory intake AVCS
• Designed for USDM EJ255 and EJ257 engines
• Manufacturer Part Number: 7025S1

Fits 2002-2005 Subaru WRX (EJ205).

GSC Power-Division S3 billet camshafts are engineered for extreme performance EJ205 applications, specifically targeting high-horsepower builds where maximum airflow is required at high RPMs. These S3 profile cams feature an aggressive 280-degree duration on both the intake and exhaust sides, providing the necessary lift and timing for large turbocharger setups. CNC-machined from high-quality billet steel cores, these camshafts offer superior strength and fatigue resistance compared to traditional cast alternatives for reliable operation under heavy loads.

• Manufacturer Part Number: 7020S3
• Series: S3 Profile
• Intake Duration: 280°
• Exhaust Duration: 280°
• Material: CNC-machined billet steel
• Fitment: 2002-2005 Subaru WRX EJ205 non-AVCS

Fits 2002-2005 Subaru Impreza WRX and 2005 Saab 9-2X Aero (EJ205).

GSC Power-Division S2 billet camshafts (MPN 7020S2) are engineered for high-performance EJ205 builds that require a significant increase in top-end power without sacrificing mid-range drivability. These 272-duration cams are CNC-ground from high-quality billet steel for superior strength and precise lobe profile consistency, offering a substantial upgrade over factory cast units. The S2 profile is specifically designed to maximize airflow for street/strip applications utilizing upgraded turbochargers.

• Engine Compatibility: Subaru EJ205
• Cam Profile: S2 High Performance
• Duration: 272 Intake / 272 Exhaust
• Construction: Billet Steel
• Manufacturer Part Number: 7020S2

Fits 2002-2005 Subaru Impreza WRX and 2005 Saab 9-2X Aero (EJ205).

GSC Power-Division S1 camshafts are engineered to provide a significant increase in mid-to-top end power for the EJ205 engine without sacrificing low-end torque or street drivability. These cams are a direct drop-in replacement for the early USDM WRX and Saab 9-2X Aero, featuring a 270/266 duration profile that works excellently with the stock turbo or upgraded small-to-medium frame turbochargers.

Every GSC S1 camshaft is CNC machined from a high-quality billet steel core for superior durability and precise lobe geometry compared to standard cast blanks. This ensures consistent performance and valve train stability even under high-load conditions. The S1 profile is specifically designed to provide a smooth idle while delivering the aggressive lift and duration needed for enthusiasts seeking more performance from their Boxer engine.

• Manufacturer: GSC Power-Division
• Series: S1
• Part Number: 7020S1
• Duration: 270° Intake / 266° Exhaust
• Material: CNC Machined Billet Steel
• Application: Subaru EJ205 Non-AVCS

Fits 2008-2016 Mitsubishi Evolution X (4B11T).

GSC Power-Division S3 camshafts are engineered for high-output 4B11T builds where maximum top-end power is the priority. These billet camshafts feature a profile optimized for large-turbocharger applications, providing the necessary lift and 280-degree duration to capitalize on increased airflow at high RPMs. CNC-machined from high-strength billet steel cores, these cams deliver the durability and precision tolerances required for competition-level performance.

• Manufacturer Part Number: 7010S3
• Series: S3 (Extreme Street/Track)
• Duration: 280° Intake / 280° Exhaust
• Material: CNC-machined Billet Steel
• Engine Compatibility: Mitsubishi 4B11T MIVEC

Note: Due to the aggressive profile of the S3 series, upgraded valve springs and retainers are required for installation to prevent coil bind and ensure valvetrain stability.

Fits 2008-2015 Mitsubishi Evolution X models equipped with the 4B11T engine and Dual MIVEC.

The GSC Power-Division S2 billet exhaust camshaft is engineered for high-performance Evo X builds requiring an aggressive profile for increased top-end power. This component is the exhaust cam only, designed to complete or replace the exhaust side of the S2 274/274 duration set. CNC machined from high-quality billet steel, this camshaft offers the structural integrity and precision tolerances required for high-RPM applications.

• Engine: 4B11T (Dual MIVEC)
• Profile: S2 Series (Stage 2)
• Duration: 274 Degrees
• Material: CNC Machined Billet Steel
• Component: Exhaust Side Only
• Manufacturer Part Number: 7010S2EX

Fits 2006-2015 Mitsubishi Lancer Evolution (MR, RS, SE) and Lancer Ralliart models equipped with the 4B11T engine.

GSC Power-Division S2 series camshafts are designed for high-performance builds requiring significant power increases across the mid-to-top end of the RPM range. These cams feature a 274/274-degree duration and are CNC-ground from high-quality billet steel cores for maximum strength and precise lobe geometry. The S2 profile is specifically optimized for vehicles with upgraded turbochargers and valvetrain components, providing the necessary lift and duration for competitive track or street use.

• Series: S2 Profile
• Duration: 274° Intake / 274° Exhaust
• Material: Precision-ground billet steel
• Engine Compatibility: Mitsubishi 4B11T
• Manufacturer Part Number: 7010S2

Fits select 2006-2015 Mitsubishi Lancer Evolution and Lancer Ralliart models (4B11T).

GSC Power-Division S1 billet camshafts are engineered for the 4B11T-powered Mitsubishi Lancer Evolution and Ralliart, offering a significant increase in horsepower and torque across the entire powerband. This 264/264 duration profile provides a perfect balance for high-performance street builds and occasional track use, designed to work within the limits of the factory valvetrain while maximizing airflow.

CNC machined from high-quality billet steel cores, these camshafts provide superior durability compared to reground units. The S1 grind delivers a broad powerband without sacrificing idle quality or low-end drivability, making it the ideal "drop-in" performance upgrade for the 4B11T engine.

• Billet steel construction for maximum strength
• Profile: S1 (Street/Performance)
• Duration: 264 Intake / 264 Exhaust
• Engine: Mitsubishi 4B11T
• Optimized for factory valve springs and idle stability
• Manufacturer Part Number: 7010S1

Fits 2006 Mitsubishi Lancer Evolution IX (4G63T MIVEC) models including MR, RS, and SE.

The GSC Power-Division S3 280/280 Billet Camshafts are engineered for high-performance Mitsubishi Evolution IX builds requiring aggressive lift and duration profiles. These S3 series cams are precision-machined from high-strength billet steel, providing the structural integrity and surface hardness needed for high-RPM operation and extreme boost applications. Optimized for the 4G63T MIVEC system, these camshafts deliver substantial power gains across the upper powerband, making them an ideal choice for large-turbo builds and dedicated track or drag vehicles.

• Manufacturer Part Number: 7009S3
• Material: CNC-machined billet steel
• Intake/Exhaust Duration: 280° / 280°
• Application: 4G63T MIVEC engines only
• Series: GSC Power-Division S3

Fits 2006 Mitsubishi Lancer Evolution IX models, including RS, MR, and SE trims with the 4G63T MIVEC engine.

The GSC Power-Division R2 series is specifically engineered for high-performance stroker applications. These billet camshafts feature a 274/274 duration profile designed to maximize airflow and power delivery in 4G63T engines utilizing the MIVEC (Mitsubishi Innovative Valve timing Electronic Control) system. CNC-machined from high-quality billet steel, these cams offer superior durability and precision compared to cast alternatives, making them ideal for high-RPM and high-boost setups.

• Manufacturer Part Number: 7009R2
• Engine Type: 4G63T with MIVEC
• Duration Intake/Exhaust: 274°/274°
• Material: CNC-machined billet steel
• Application: Optimized for stroker engine builds

Fits 1996-2005 Mitsubishi Evolution IV, V, VI, VII, and VIII equipped with the 4G63T engine.

GSC Power-Division R3 Billet Camshafts are engineered specifically for high-displacement 4G63T stroker engines (2.1L, 2.2L, or 2.4L) that require increased airflow to maintain power at high RPMs. The R3 profile is designed for extreme street/track applications and high-boost environments where a standard camshaft profile would restrict top-end performance. CNC-ground from chilled billet steel cores, these camshafts provide superior durability and precision compared to cast alternatives.

• Designed specifically for stroker engine configurations
• Aggressive R3 profile optimized for high-lift and duration
• Precision CNC-ground from high-strength billet steel
• Requires upgraded valve springs and retainers
• Manufacturer Part Number: 7008R3

Fits 1992-1996 Mitsubishi Lancer Evolution I, II, and III models equipped with the 4G63T engine.

The GSC Power-Division R2 camshaft set is engineered specifically for high-displacement 4G63 stroker builds (2.1L, 2.2L, 2.3L, or 2.4L) that require an aggressive profile to optimize airflow across a broad powerband. CNC machined from high-quality billet steel cores, these 274-degree duration cams provide the durability and precision geometry required for high-lift applications. The R2 profile is designed to maximize the performance of larger turbochargers while maintaining the mid-range response expected from a stroker engine.

• Manufacturer Part Number: 7003R2
• Series: R2 Stroker Profile
• Duration: 274° Intake / 274° Exhaust
• Construction: CNC machined from billet steel
• Required Hardware: Must be used with GSC Beehive Valve Springs and Retainer kit
• Fitment: Early 4G63T (7-bolt) Evolution I-III engines

The GSC Power-Division Cylindrical Valve Spring Kit (MPN 5775) is designed specifically for the Nissan RB26 and RB26DETT engines to enhance valvetrain stability and reliability. These cylindrical springs serve as a critical upgrade for engines requiring more consistent spring rates and improved harmonic resistance at higher RPM ranges compared to aged factory components.

• Fits Nissan RB26 and RB26DETT engines
• High-quality cylindrical spring geometry for consistent performance
• Designed for high-RPM valvetrain control and durability
• Direct fitment for RB26 cylinder heads
• Manufacturer Part Number: 5775

Fits 2013-2017 Subaru BRZ, Scion FR-S, and Toyota 86.

The GSC Power-Division valve spring seat and retainer kit (MPN 5756) is engineered to provide a stable, high-strength foundation for high-performance valvetrain setups. Designed specifically for use with single valve springs, this kit replaces factory components with precision-engineered materials to improve engine response and valvetrain stability at higher RPM ranges.

• Titanium Retainers: Precision-machined for significant weight reduction over factory steel, reducing reciprocating mass for improved valvetrain control.
• Chromoly Seats: High-strength chromoly steel seats provide a hardened, durable surface that resists wear and prevents spring walking under high loads.
• Platform Specific: Engineered for the FA20 engine, ensuring exact tolerances and a direct replacement for OE seats and retainers.
• Manufacturer Part Number: 5756

Fits select 1988-1995 Toyota Celica All Trac and MR2 Turbo (3SGTE) utilizing a shim-under-bucket conversion.

This GSC Power-Division valve spring and titanium retainer kit is engineered to meet the demands of high-performance 3SGTE builds. By replacing the heavy factory components, this kit significantly reduces reciprocating mass in the valvetrain, providing the stability and seat pressure required to prevent valve float at high RPM and increased boost levels. The lightweight titanium retainers are CNC-machined for precise fitment and durability, while the springs are designed specifically for the geometry of shim-under-bucket setups.

• Manufacturer Part Number: 5746
• Compatible with Toyota 3SGTE shim-under-bucket configurations
• High-strength chrome silicon valve springs
• Lightweight, CNC-machined titanium retainers
• Engineered for high-lift camshafts and elevated RPM ranges
• Direct fit for 1988-1995 Toyota Celica and MR2 Turbo applications

Fits 1993-1998 Toyota Supra Twin Turbo models (2JZGTE / 2JZGE / VVTI).

The GSC Power-Division valve spring kit is designed to provide the increased seat pressure and high-rev stability required for high-performance 2JZ builds. These springs are engineered to handle the added demands of aftermarket camshafts and high-boost applications, preventing valve float and ensuring consistent valvetrain timing. This kit is compatible with GTE, GE, and VVT-i cylinder head variants.

• Specifically engineered for Toyota 2JZ platforms
• Compatible with 2JZGTE, 2JZGE, and VVT-i engine variants
• Provides improved tension and seat pressure for high-RPM operation
• Prevents valve float under high boost or aggressive cam profiles
• Manufacturer Part Number: 5744
• Includes: Set of 24 valve springs

Fits select 1999-2015 Subaru Impreza, WRX, and WRX STI models, as well as the 2005 Saab 9-2X Aero (EJ Turbo DOHC engines).

The GSC Power-Division (P-D) Valve Spring and Titanium Retainer Kit (MPN 5743) is engineered to provide the valvetrain stability required for high-performance EJ-series DOHC engines. This kit is a critical upgrade for builds utilizing aggressive camshaft profiles, high boost levels, or increased RPM limits where factory springs are prone to valve float. By combining high-tensile valve springs with precision-machined titanium retainers, this kit reduces reciprocating mass and increases seat pressure to ensure reliable valve control and improved throttle response.

• Manufacturer Part Number: 5743
• Material: High-tensile springs with lightweight titanium retainers
• Application: Specifically designed for Subaru EJ Turbo DOHC valvetrains
• Benefits: Prevents valve float and supports higher lift camshafts
• Kit Components: Full set of performance valve springs and titanium retainers

The GSC P-D Dual Valve Spring and Titanium Retainer Kit is engineered for high-performance Toyota 2JZ engines. This kit (MPN 5266) provides the seat pressure and coil bind clearance required to support aggressive camshaft profiles and high-boost applications where factory valve train components may reach their limits.

By utilizing a dual-spring design, this set improves harmonic dampening and ensures stable valve operation at high RPMs. The included titanium retainers significantly reduce reciprocating mass compared to standard steel units, allowing for faster engine response and increased protection against valve float during spirited driving or competitive use.

• Fits Toyota 2JZ engines
• Includes precision-wound dual valve springs
• Lightweight CNC-machined titanium retainers
• Designed for high-lift camshafts and increased boost pressure
• Manufacturer Part Number: 5266