GSC Power-Division +1mm Exhaust Valve For 3SGTE

Low stock: 4

$199.11

$199.11 $199.11

Prop 65 Warning

This product can expose you to chemicals including Nickel, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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 Size
+1mm - 30mm

Product fitment
3STGE

IMAGES ARE FOR ILLUSTRATION PURPOSES ONLY.

Valve Specification	Metric ( mm )	Imperial ( In )
Stem Diameter	6	-
Overall Length	99.60	-
Head Diameter	30.00	-

Exhaust Valves

GSC Power-Division performance valves are designed for high-output engines where material strength, precision manufacturing, and thermal durability directly impact reliability and performance. Produced from carefully selected premium stainless steel and superalloy materials, GSC valves are built to withstand the elevated temperatures, cylinder pressures, RPM levels, and combustion demands found in modern performance engines.

Every valve is manufactured to stringent dimensional and material standards to deliver precise fitment, consistent sealing performance, and long service life. Whether supporting naturally aspirated builds, high-boost turbo systems, endurance applications, or extreme horsepower race programs, GSC valves are engineered to handle conditions where lesser components reach their limits.

Frequently Asked Questions

What materials are GSC valves made from?

Depending on the application, GSC valves are manufactured from premium stainless steel or high-temperature super alloys designed to withstand extreme heat and cylinder pressures.

When should I upgrade to super alloy exhaust valves?

Super alloy exhaust valves are recommended for turbocharged, supercharged, nitrous, endurance racing, and other extreme applications where exhaust temperatures are elevated.

Are GSC valves compatible with OEM valve locks and retainers?

Many applications are designed to work with OEM-style locks and retainers, but compatibility should always be verified prior to installation.

GENERAL F.A.Q

Many GSC products, including our camshafts, are designed, machined, and finished in-house at our facility in South Carolina, USA. We maintain strict quality control throughout the manufacturing process.

GSC Power-Division has been serving the performance automotive industry for over 20 years, supplying racers, engine builders, tuners, and enthusiasts worldwide.

Yes. We sell directly through our website and also through an extensive network of authorized dealers and distributors worldwide.

GSC’s warranty covers defects in the product itself. Consequential damages, including engine damage, labor, towing, or vehicle downtime, are not covered.

Products used in racing or competition environments are subject to conditions outlined in our warranty policy. Performance applications inherently involve risks beyond normal operating conditions.