IAG Stage 3 Extreme Closed Deck Short Block (10.5:1 Compression Ratio) - FRS/BRZ/86 Staged Short Blocks GSC springs have the highest

GSC springs have the highest level of spring load retention while still maintaining good fatigue threw out the life of the spring

These are height adjustable for those of you who want to improve the center of gravity in their vehicle

Each set is flow matched to within 1-2%

The IAG Performance Subaru WRX / STI oil pickup was designed by Tigwerks to replace the OEM EJ25 oil pickup

With the 6-pad spring-centered race disc engagement is harsher

IAG Stage 3 Extreme Closed Deck Short Block (10.5:1 Compression Ratio) - FRS/BRZ/86 Staged Short Blocks GSC springs have the highestIAG Stage 3 Extreme FA20 Closed Deck Short Block The IAG Stage 3 Extreme short block starts with new Subaru FA 2. 0L BRZ engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF 4SS CNC mill to accept the IAG CLOSED Deck Inserts that transform the block into a solid deck. The unique inserts feature small passages that allow needed coolant flow to the deck surface. The case halves are