Fits select 1992-2010 Dodge Viper models (V10).

Manley Race Master series exhaust valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racing. Optimized for engines operating under 8000 RPM, these valves are constructed from XH-426 high-quality stainless steel to ensure unparalleled durability in high-heat environments. This set of 10 is specifically recommended for alcohol-fueled engines and features a straight stem design.

• Manufacturer Part Number: 11643-10
• Series: Race Master (Straight Stem)
• Material: XH-426 Stainless Steel
• Valve Head Diameter: 1.600"
• Finish: Swirl polished underhead and fully machined combustion faces for maximum airflow efficiency
• Longevity: Chrome stems and hard tips for enhanced wear resistance
• Quantity: Set of 10

Fits Ford Coyote (5.0L) DOHC engines.

Manley Race Master series valves are engineered for the specific demands of bracket, drag, and oval track racing. Optimized for engines operating under 8000 RPM, these valves are the recommended choice for exhaust applications in alcohol-fueled engines, providing the thermal stability and durability required for high-stress combustion environments.

Each valve is constructed from high-grade XH-426 stainless steel and features swirl-polished under-head areas with fully machined combustion faces to improve airflow and efficiency. To ensure longevity in high-performance valvetrains, these valves include chrome-plated stems and hardened tips for superior wear resistance.

• Manufacturer Part Number: 11627-8
• Head Diameter: 32mm
• Stem Diameter: 5.96mm (0.2346 in)
• Overall Length: 4.274 in
• Material: XH-426 Stainless Steel
• Valve Shape: Race Master (Straight Stem)
• Quantity: Set of 8

Fits Ford Coyote 5.0L DOHC engines.

Manley Race Master valves are meticulously engineered for the rigorous demands of bracket, drag, and oval track racing. Designed specifically for engines operating under 8,000 RPM, these valves provide the durability and flow characteristics required for high-performance builds. They are the recommended choice for exhaust valves in alcohol-fueled engines, ensuring reliable performance under extreme thermal conditions.

Constructed from high-quality stainless steel, these Race Master straight-stem valves feature swirl-polished under-head areas and fully machined combustion faces to optimize airflow and efficiency. To ensure longevity, Manley incorporates chrome stems and hardened tips for superior wear resistance against guide and rocker friction.

• Part Type: Race Master Series Valves
• Material: High-quality stainless steel
• Head Diameter: 38mm
• Stem Diameter: 5.96mm
• Overall Length: 4.722"
• Finish: Swirl polished under-head and fully machined faces
• Stem: Chrome-plated with hardened tips
• Quantity: Set of 8
• Manufacturer Part Number: 11626-8

Fits Ford 5.0L Coyote DOHC 4V engines. Manley Race Master Series exhaust valves are purpose-built for the high-intensity environments of bracket, drag, and oval track racing. These valves are engineered for engines operating up to 8000 RPM and are specifically recommended for alcohol-fueled applications where valve seat and stem durability are critical.

Each valve is manufactured from XH-426 stainless steel for superior heat resistance. The design features a swirl-polished underhead area to optimize exhaust gas flow and a fully machined combustion face for maximum combustion efficiency. To ensure long-term reliability under race conditions, these valves include chrome-plated stems and hardened tips to resist wear and galling at the rocker interface.

• Manufacturer Part Number: 11623-8
• Series: Race Master (Straight Stem)
• Head Diameter: 31mm
• Stem Configuration: Triple Groove
• Material: XH-426 Stainless Steel
• Included: Set of 8 Exhaust Valves
• Construction: Swirl polished with chrome stems and hard tips

Fits Ford Coyote 5.0L DOHC 4-valve engines.

Manley Race Master series intake valves are engineered to meet the rigorous demands of bracket, drag, and oval track racing. These 37mm valves are the primary choice for high-performance engines operating at engine speeds up to 8,000 RPM. Featuring the "Race Master" straight-stem profile, these valves are manufactured from NK-842 stainless steel for exceptional heat resistance and structural integrity.

To optimize cylinder head flow, each valve features a swirl-polished under-head area and a fully machined combustion face. The stems are chrome-plated to reduce friction and wear within the guides, while the tips are hardened to withstand high-stress valvetrain cycles. This set of 8 uses a triple-groove design to ensure secure valve lock retention under load.

• Manufacturer Part Number: 11622-8
• Valve Series: Race Master (Straight Stem)
• Material: NK-842 Stainless Steel
• Head Diameter: 37mm
• Lock Style: Triple Groove
• Stem Type: Chrome-plated with hardened tips
• Processing: Swirl polished and fully machined
• Quantity: Set of 8

Fits select 2007-2008 Cadillac Escalade (Base, ESV, EXT), GMC Yukon Denali/XL 1500, and Hummer H2 models equipped with L92 cylinder heads.

Manley Race Flo valves are meticulously engineered for the rigorous demands of bracket, drag, and oval track racing. These intake valves are designed to optimize airflow and durability in Small Block Chevy engines utilizing LS3, L99, or L92 cylinder heads, providing a reliable solution for high-performance builds operating under 8,000 RPM.

• Series: Race Flo
• Part Number: 11620-8
• Quantity: Set of 8 Intake Valves
• Application: Small Block Chevy LS3 / L99 (L92 Head)
• RPM Limit: Engineered for engines operating under 8,000 RPM
• Construction: Optimized for high-stress racing environments

Fits 1999-2008 Ford GT, Mustang Shelby GT500, SVT Cobra, and SVT Cobra R (4.6L).

Manley Race Master Series exhaust valves are engineered for the high-stress environments of bracket, drag, and oval track racing. Designed specifically for engines operating up to 8,000 RPM, these valves provide the thermal stability and mechanical strength required for high-performance builds, including those utilizing alcohol fuels. Each valve is manufactured from XH-426 stainless steel to ensure long-term durability under extreme exhaust temperatures.

The Race Master series utilizes a straight-stem design with chrome-plated stems and hardened tips to minimize guide wear and resist mushrooming. To optimize cylinder head efficiency, these valves feature swirl-polished underhead areas and fully machined combustion faces, which promote smoother airflow and more consistent combustion cycles.

• Manufacturer Part Number: 11615-8
• Series: Race Master (Straight Stem)
• Material: XH-426 Stainless Steel
• Head Diameter: 30mm
• Stem Style: Triple Groove
• Finish: Swirl polished underhead with fully machined faces
• Construction: Chrome stems and hardened tips for wear resistance
• Compatibility: Recommended for exhaust applications in gasoline and alcohol engines

Fits select 2002-2012 Subaru Impreza WRX, WRX STI, and Saab 9-2X Aero models.

Manley Race Series exhaust valves are engineered to withstand the extreme thermal and mechanical stresses of high-performance EJ-series engines. These Race Master (Straight Stem) valves are specifically designed for applications operating under 8000 RPM, making them an ideal choice for bracket, drag, and oval track racers. Constructed from XH-426 high-temp stainless steel, these valves offer the durability required for turbocharged builds and are highly recommended for use in alcohol-fueled engines.

To maximize gas flow and efficiency, each valve features a swirl-polished under-head area and a fully machined combustion face. The stems are chrome-plated and equipped with hardened tips to ensure superior wear resistance and a long service life within the valve guide.

• Manufacturer Part Number: 11155-8
• Material: XH-426 Stainless Steel
• Valve Type: Race Master (Straight Stem)
• Head Diameter: 32mm
• Stem Construction: Chrome-plated with hard tips
• Finish: Swirl polished under-head and fully machined face
• Application: Rated for engines up to 8000 RPM

Fits select 2002-2012 Subaru Impreza WRX and WRX STI, and 2005-2006 Saab 9-2X Aero.

Manley Race Series intake valves are meticulously engineered to handle the thermal and mechanical stresses of bracket, drag, and oval track racing. Designed for engines operating at speeds up to 8,000 RPM, these valves are an essential upgrade for high-performance EJ-series builds. These valves feature the Race Flo shape, utilizing a specialized profile to optimize flow across the seat and into the combustion chamber.

Constructed from high-grade NK-842 stainless steel, Manley part number 11138-8 features swirl-polished under-head areas and fully machined combustion faces to maximize airflow efficiency. To ensure long-term durability and resistance to wear, these valves are finished with chrome stems and hard tips for superior compatibility with high-lift camshafts and heavy-duty valvetrain components.

• Head Diameter: 36mm
• Material: NK-842 Stainless Steel
• Stem Construction: Chrome-plated stems with hardened tips
• Face Design: Fully machined combustion face
• Profile: Race Flo for enhanced intake flow
• Manufacturer Part Number: 11138-8

Fits 1994-2005 Mazda Miata Base and LS models (1.8L).

Manley Race Master Series exhaust valves are engineered to meet the demands of bracket, drag, and oval track racing. Designed specifically for engines operating under 8,000 RPM, these valves provide the durability required for high-stress competition and are the recommended choice for exhaust applications in alcohol-fueled engines.

Constructed from XH-426 stainless steel, these valves feature a straight-stem Race Master profile. Each valve is swirl-polished under the head and has a fully machined combustion face to optimize airflow and efficiency. For long-term reliability, Manley incorporates chrome-plated stems and hardened tips to resist wear and friction within the valve guide.

• Manufacturer Part Number: 11101-8
• Material: XH-426 Stainless Steel
• Valve Diameter: 28mm
• Stem Style: Race Master (Straight Stem)
• Features: Swirl-polished underhead, fully machined faces, chrome stems, and hard tips
• Compatibility: Designed for Mazda 1.8L DOHC 16V (BP056) engines