Cylinder Block

$3,199.99 $3,359.99

IAG Stage 2 2.5L Subaru Short Block for WRX, ST...

The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performa...

The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performance short block. The IAG Stage 2 short block builds on the Stage 1's strengths by adding ACL Race bearings and IAG Spec H-Beam forged connecting rods. The upgraded rods and bearings are able to support additional engine load produced by larger turbochargers that the OEM STI rods cannot support reliably. Each IAG Stage 2 Short Block starts with new Subaru 2.5L 99.5mm stock bore EJ25 engine case hal...

$479.00

ATI Super Damper Serpentine Series Harmonic Bal...

ATI Super Damper Serpentine Series harmonic balancers are patented and feature grooves for serpen...

ATI Super Damper Serpentine Series harmonic balancers are patented and feature grooves for serpentine belts machined into the outer damper shell. The dampers come with six outer grooves for standard OEM drive systems—but eight and 10 grooves are available for supercharger or turbo applications. Serpentine dampers are offered in a variety of diameters, and crank hubs may be fitted with a 6-groove serpentine pulley to drive external oil pumps or vehicle accessories. The Serpentine Series Super ...

$3,149.00

Kinetic Autoworks KA500 EJ25 Shortblock

Our most popular Subaru EJ25 Shortblock package. Using only the best components, we assemble a BR...

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 ar...

$2,299.99 $2,414.99

IAG Stage 3 Tuff EJ25 Closed Deck Converted Cas...

IAG Stage 3 Tuff EJ25 Closed Deck Converted Case Halves Bored & Honed to 99.75mm with 1/2" He...

IAG Stage 3 Tuff EJ25 Closed Deck Converted Case Halves Bored & Honed to 99.75mm with 1/2" Head Stud Conversion For Subaru WRX, STI, Legacy GT & Forester XT

$2,099.99 $2,204.99

IAG Stage 3 EJ25 Closed Deck Converted Case Hal...

IAG Stage 3 EJ25 Closed Deck Converted Case Halves Bored & Honed to 99.75mm For Subaru WRX, S...

IAG Stage 3 EJ25 Closed Deck Converted Case Halves Bored & Honed to 99.75mm For Subaru WRX, STI, Legacy GT & Forester XT

$1,799.99 $1,889.99

IAG Stage 3 EJ25 Closed Deck Converted Case Hal...

IAG Stage 3 EJ25 Closed Deck Converted Case Halves For Subaru WRX, STI, Forester XT & Legacy GT

IAG Stage 3 EJ25 Closed Deck Converted Case Halves For Subaru WRX, STI, Forester XT & Legacy GT