GSC P-D Set of 8 30mm Head (STD) Chrome Polished Exhaust Valve Honda K Series Vtec K20 | K24
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.
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
Specifications:- Stem Diameter (mm): 5.5
- Overall Length (mm): 102.60
- Head Diameter (mm): 30.00

Who is GSC?
GSC Power Division started its business back in 2004. The company is known for manufacturing high-performance engine internals for various automotive vehicles. Known for creating camshafts for Japanese turbo cars, they have since expanded their offering, catering to other vehicle brands such as BMW, Porsche, Toyota, Mitsubishi, Subaru, Nissan, Honda, Ford, Mazda, Dodge, and Lamborghini.
Using Technology to their Advantage
The company is able to produce top quality products by using the most advanced manufacturing technology such as a CNC machine and the latest design software. This allows them to create precise and accurate parts that would directly fit in the vehicle.
Parts Built for Serious Power
The company offers a wide range of products, ranging from camshafts, valves, valve seals, lifters, valve guides, and more. Depending on your required specification, their parts are designed for high-performance application and can withstand more than 1000 plus horsepower. This is why they have become the brand of choice by many top teams and racers in various racing disciplines.
Purchase GSC Products at Vivid Racing
If you are in search of a product that would help you achieve that horsepower gain you are aiming for, then GSC is the brand for you. Tested by racers all around, they have provided track-proven products that are professionally done by people with decades of experience in making cars go fast. They have parts upgrade for most high-performance vehicles in the market. Visit Vivid Racing and check out their product offering that would fit your specific needs and vehicles.
GSC Power-Division LLC warranties all of our camshafts, valve train, and internal engine parts will be free from any and all manufacturing defects. Our warranty is only valid as long as our products are installed correctly by a certified SAE technician or certified engine builder to either GSC Power-Division LLC's provided specifications or to the original manufacturer's specifications (if no specs are given). GSC Power-Division LLC will not warranty any second hand or transferred products. GSC Power-Division LLC's warranty is with the original purchaser of the product(s) and is valid for one (1) year from the initial date of shipment. Warranty will be void on all products that show evidence of improper application or installation, abuse, lack of proper maintenance, alteration from the original configuration of the product, or not used in conjunction with matching components. GSC Power-Division LLC does not warranty any of its products when used for race-only applications as well as non-automotive use of our line of automotive products. GSC Power-Division LLC tries to ensure that every item supplied is suitable for its specific, outlined application. Due to the possibility of variation of modifications made on performance engines that affect performance, economy, reliability, and engine life; the final responsibility of our product rests with the person performing the installation. GSC Power-Division LLC's Technical Department is available and should be contacted if any issues, questions, or concerns are discovered with our products. GSC Power-Division LLC's obligation under this warranty is limited to the repair or replacement solely of GSC Power-Division LLC products. On occurrence of a problem, please contact GSC Power-Division LLC's Technical Department to arrange for an inspection of the item. No claim will be accepted without the prior approval of GSC Power-Division LLC. All camshafts manufactured by GSC Power-Division LLC are intended for off-road use only and should never be used on public roads.