HKS Head Gaskets High Compression NA Stopper Type- 13+ Subaru BRZ & Scion FR-S
HKS Head Gaskets High Compression NA Stopper Type - 13+ Subaru BRZ & Scion FR-S
The Opposed Bead Stopper Type Metal Gasket for the FA20 engine can offer a high level of bore sealing durability compared to the stock head gasket. Of their two available head gaskets, this is HKS' Higher Compression gasket set for NA engines. It provides an increased compression ratio for a ratio of 12.6 compared to the stock 12.5 ratio. It maintains a great seal under high pressures and are able to endure high engine outputs due to the stopper structure of the bore seal. A special coating is also applied to both sides of the gasket to improve the contact surface and sealing performance of the gaskets when tightening the bolts. It is also thinner compared to the stock gasket which makes it a better candidate for an NA engine build.
Thickness vs stock (mm): 0.5 vs 0.6
Compression Ratio vs stock: 12.6 vs 12.5
With the HKS Capacity Upgrade Kit (Stroker Kit) the compression ratio drops to 12.4
Includes both left and right side gaskets for a full set.