Closed Deck EJ20 Base Shortblock With Forged Internals Breather Caps and Fittings Symmetrical 4-1 design maintains consistent

Symmetrical 4-1 design maintains consistent and high velocity exhaust gas flow as RPMs rise

These are for use with injectors that have the 14mm O-Rings top and bottom and have a 60mm Distance between the 2 o-rings

Seasoned FA20 BRZ/FRS Case Halves (S20)

This includes a closed rear section

Head Diameter (mm) 33mm

Closed Deck EJ20 Base Shortblock With Forged Internals Breather Caps and Fittings Symmetrical 4-1 design maintains consistentThis closed deck block design has been proven to withstand extreme boost levels resulting in high cylinder pressures without the worry of cracking a sleeve. The billet material that reinforces the combustion area has been further optimized with our V3 closed deck block in the known problem areas making it a far superior product to any sleeved block. With a closed deck block the stock sleeves are still in place eliminating all risk of dropping sleeves