Port Flow Design specializes in cylinder heads for all types of racing applications. Founded in 1982, Port Flow Design has worked with the top racing assosiations, which include: NHRA, NASCAR, INDYCAR, USAC, SCCA, and IMSA. Through the years we have studied and worked with the best in the industry to learn more about race engine development. Working for such companies like Cosworth, Edelbrock, HPD (Honda Performance Development), NPTI (Nissan Performance Technology), Porsche Motorsports and TRD (Toyota Racing Development).
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Supertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. Supertech Valvetrain has proven in a variety of motorsports applications from mild 150 horsepower street engines to 1000+ Horsepower race cars. Don't be fooled by lesser quality valvetrain components, stick with Supertech and get the quality you deserve for your project that will fit right the first time and offer superior performance and longevity.
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Now that you have that high flowing cylinder head, you need to keep it attached to your block. ARP head stud kits will get the job done whether it is for a high compression all motor or a 50lbs of boost turbo monster. ARP studs are made from 8740 heat treated alloy, black oxide coated and thread rolled to increase strength by over 1000% for a clamping pressure in excess of 200,000 psi.

B16/GSR stud kit...................$180 plus shipping
B18A/B (ls) stud kit..............$180 plus shipping
H22 stud kit...........................$180 plus shipping
D16 stud kit...........................$180 plus shipping
S2000 stud kit.......................$180 plus shipping
K20/24 stud kit......................$180 plus shipping