This was designed by David Atkins and has been patented.

This is an excellent upgrade to any engine. These are desirable under high boost or nitrous applications.

This is a one piece corner seal. Can be used in place of the 2 piece design with plug. Can be used with the wire type corner seal spring or the 93-95 HP wafer type spring. The 93 Style spring is recommended.

Mazda basically copied our design with the Rx8, getting rid of their faulty rubber corner seal plug and opting for a steel one basically making their corner seals solid like these.

Do not use these with lapped side housings.