GrimmSpeed Head Gasket Set 2.5 EJ WRX/STI

Quick Specs Sold as a Set/Pair - Single and Dual AVCS fitment Die Cut Multi-Layer [Stainless] Steel (MLS) Construction - Provides smooth edge finish and consistency from batch to batch, ±0.001” manufacturing tolerance Folded Stopper Layer to Better Seal the Combustion Chamber .25micron Nitrile Rubber Layer Coating - Reduces chances of leaking on imperfectly smooth mating surfaces over non-coated gasket.  Accommodates up to 100.0mm bore Compatible with up to 13mm, ½” studs 0.78mm, 1.1mm and 1.5mm thickness (after crushing)