Outfront Motorsports FB25DIT Hybrid Non Closed Deck 550 Shortblock STi 2015-2021 If you are running an

If you are running an upgraded turbocharger on your FA24

Vipec i88 (Loom A/Pin Kit A also required)

All wires are color coded to match the manual

But Tomei 4-1 type exhaust manifold has high efficency

The KVS87-DT dual spring and titanium retainer kit is to suit turbocharged 2015+ Subaru FA20 engines

Outfront Motorsports FB25DIT Hybrid Non Closed Deck 550 Shortblock STi 2015-2021 If you are running anWant to build a 2. 4l out of your FA20DIT engine? Look no further. This hybrid shortblock developed by us in 2016 is the perfect answer. This block utilizes an FB25 case, FA20DIT Crankshaft, and a custom Forged piston to match up with your FA20 DIT heads and keep your compression ratio the same as stock. With a larger bore, this FB25 hybrid block will give you huge gains in Displacement, torque, and response. Seasoned FB25 Case New FA20DIT Crankshaft