SKU OUT-SB-V4-RACER+
 
This Block Is Our V4 Closed Deck EJ257 Racer With Je Ultra Pistons and +2mm longer Manley Tri Beam Rods w/ 625+ bolts. This short block is the go to for 1000+ BHP.
This 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 V4 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 and pushing coolant that you have with a sleeved block. The V4 is a thicker insert only in the known weaker areas of the cylinder. This adds strength to the bore while not compromising cooling. This block comes machined for ½” head studs.
This engine consists of the following parts:
Seasoned EJ257 case halves
V4 Closed Deck Process
Custom Outfront Spec JE Ultra Pistons for +2mm Longer Rods (Grain Flow Optimized Forging, Lateral Gas Ports, Ceramic Crown Coating, Perfect Skirt Coating, Accumulator Groove, Double Broach Pin Oiling, Upgraded 9310 Pins and locks, Carbon Steel Nitride Rings)
+2mm Longer Manley Tri-Beam Connecting Rods W/ ARP 625+ Bolts
King Performance Bearings
New OEM Subaru Nitride Treated 2017+ STI Crankshaft
Machined for ½” Head Studs
Pinned Mains
ARP Case Bolts
Line Honed Mains
Rear Covers, Rear Seal, and Pin Plugs Included!!!
No Core required!!