Our most popular Subaru EJ25 Shortblock package. Using only the best components, we assemble a BRAND NEW engine block, ready for most street applications. The new Subaru case halves are precision bored and honed from the factory. Instead of machining the halves to fit pistons, we have a piston that fits the cylinders, perfectly. This ensures an exact piston to cylinder wall clearance as well as a quiet operating forged engine. Paired with strong H-Beam rods and coated bearings, our engines are ready for battle. All components are blueprinted, balanced, and clearanced to proper specifications. This shortblock is rated for up to 500whp. If your goals are more than what this block supports, we have many options to get you there, just ask. Pricing includes all parts listed below, as well as assembly labor. Optional head studs, oil pump, gasket set, and oil pick up can be added.
- Subaru OEM 2.5L Block Halves - Subaru STI
- Subaru OEM Forged Salt Bath Nitrated Crankshaft - Subaru WRX 2006-2014 / STI 2004+
- Manley 04+ WRX STi (EJ257) Bore (99.50mm Grade B) Pistons w/ Rings - Teflon coated skirts- Manley Subaru WRX / STI (EJ18/20/22/25) H Beam Connecting Rod Set
- King Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) (Size STD) Performance Main Bearing Set
- King Subaru EJ20/EJ22/EJ25 (Suits 52mm Journal Size) (Size STD) Tri-Metal Perf Rod Bearing Set
- Complete Race Bearing set
- New OEM Subaru case half bolts
*All shortblocks assembled by Kinetic Autoworks carry our workmanship guarantee. A break-in process is mandatory with all engine blocks, and we will provide details to ensure it is done properly upon engine delivery.