Our Stage 1 fully built FA20 Turbo shortblock supports up to 500bhp with proper tuning and supporting modifications. Our short blocks are race proven for durability and reliability under the most demanding conditions. Available for turbocharged BRZ or 2015-2021 WRX models. WRX variants may select between Manley and Mahle piston options.
Every build goes through a rigorous ultrasonic cleaning, measuring, and assembly process with each measurement logged for future reference. Components are weight matched and carefully machined and polished as required to achieve the desired tolerance. Bearing clearances are measured with calibrated Mitutoyo micrometers and precision Sunnen dial bore gauges and adjusted to within +/- .00015" by substituting bearing shells. Piston ring gaps are hand filed to within .001"of the target clearance which is based on the intended use and expected power levels.
The components used in this short block are as follows: FA20 Block Case w/ Factory Pinned Mains , Manley or Mahle 2618 Forged Pistons, RalliSpec H-Beam 4340 Forged Rods by Saenz, ARP2000 Rod Bolts, ACL Tri-Metal Main and Rod Bearings, Nitride Hardened Crankshaft, Rear main seal, block plugs & covers included.
One year limited warranty when professionally installed and registered
Click here for shortblock comparison and specification chart.
Click here for warranty and engine break-in information.
| Part No. | Description | Displacement | Price Ea. | Add to Cart |
|---|---|---|---|---|
| RSB-SSFA | RalliSpec Stage 1 Shortblock Manley 10.0CR | WRX FA20DIT | $4350.00 |  |
| RSB-SSFA2 | RalliSpec Stage 1 Shortblock Mahle 10.5CR | WRX FA20DIT | $4350.00 | |
| RSB-SSBRZ | RalliSpec Stage 1 Shortblock Manley 10.0CR | BRZ | $4350.00 | |
