This kit includes the largest oversized Stainless Steel valves that you can run on the 22R/RE cylinder head. The Intake valves are made from an enhanced version of EV8 (21-4N) the highest grade of Stainless Steel available. The Exhaust valves are made from EV16 (21-8N) for greatest strength at higher temperatures. Remember to use the Street Performer valve springs for cam lifts under .450. (Pro Dual valve springs are recommended for higher lift camshafts).
NOTE: Machine work will be required to install the seats. A valve job will need to be performed once the seats are installed.
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