Cosworth High Performance Short Block Crate Engine Subaru STI EJ25

Cosworth EJ25 (STI) short block has gone through countless hours of dyno evaluation to determine the best combination of parts to guarantee reliable performance and reliability. Each EJ25 short block starts with a brand new Subaru case. The case is inspected and then the bores are honed to perfection to receive Cosworth Forged Pistons. We then balance the rotating assembly that includes a new STI Forged crank and Cosworth Forged H-Beam Connecting Rods to within .5 gram. The select parts are professionally assembled by one of Cosworth?s skilled engine builders using our own coated , tri metal race spec bearings. Options include: Billet 79mm crankshaft, Billet timing belt guide. For added performance, please see our Cosworth CNC ported Big Valve Cylinder Heads and high performance camshafts.

Cosworth EJ25 short block includes the following:

New Subaru EJ25 STI Engine case
New Subaru EJ25 STI Forged Crankshaft
Cosworth Forged H-beam Connecting Rods
Cosworth Forged Pistons and rings
Cosworth Coated, Tri-metal bearings
Balanced to within .5 gram
Professionally assembly

This product ships via truck freight within continental US. Please call for shipping quote.