IAG Stage 4 Tuff EJ25 Closed Deck Converted Case Halves with 14mm Head Stud Conversion and Fire-Lock for Subaru WRX, STI, Forester XT and Legacy GT
Supporting Your Cylinders - Open, Semi-Closed, Or Closed Deck?
How to tell if you have a closed deck EJ20G?
Supporting Your Cylinders - Open, Semi-Closed, Or Closed Deck?
CNC Closed Deck Modification EJ25
IAG Stage 3 Extreme EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - Fastech Motorsports
Our Blogs Technical Articles Subaru Closed Deck vs Open Deck blocks
IAG Performance Stage 3 Magnum EJ25 Closed Deck Case - 14mm H.S.M., Fire-Lock, (No Bore & Hone) - For Subaru WRX, STI, LGT, FXT | Dirty Racing Products
A closed deck is the way to go when you're looking to make BIG power on an EJ series Subaru motor. No longer limited to the ever more rare EJ22 blocks you
Our Blogs Technical Articles Subaru Closed Deck vs Open Deck blocks
The Closed Deck Subaru EJ20, Built for Boost! - MotoIQ
IAG Magnum EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - Fastech Motorsports
IAG 1000+ Closed Deck Long Block Engine with Stage 5 CNC Completely Ported Heads for 2006-14 Subaru WRX, 2004-19 STI, 2004-13 Forester XT & 2005-09 Legacy GT
Closed Decking - Hard Core Racing
IAG Stage 3 Extreme FA20 Subaru Closed Deck Short Block for 2013-19 BRZ / FR-S (10.5:1 Compression Ratio)
Prime Motoring Phase 2-X (P2X) EJ25 Closed Deck Shortblock
Subaru Closed Deck Engines - Open Vs Closed Explained Here
Subaru Closed Deck Engines - Open Vs Closed Explained Here