20B 3mm Rx7 Cryogenically Treated Solid Corner Seal Set (ARE89.5-C)
18 Cryogenically Treated 3mm Solid Corner Seals, For use on all 20B applications.
See our Cryogenically Treated FAQ
This is an excellent upgrade to any engine. These are desirable under high boost or nitrous applications. This was designed by David Atkins and has been patented.
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.