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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
High spring frequency to allow for better spring surge control at high rpm
Height: 42 mm
map and compensate boost
Custom high flow low inertia 64mm turbine wheel
Seat Locator : SEAT-TS/SUB4
New OEM RA Shortblock W- Forged CP EJ255 Pistons 99.5 w- Race Bearings 99.5 Wire Harness Connectors High spring frequency to allowOutfront Motorsports Stage 1 RA shortblock is for that added Protection against ring land failure on a lightly modified car. These custom pistons are made specifically for use with the D25 cylinder heads found on the 06 14 WRX and other EJ255 applications. This configuration includes: Custom Outfront Motorsports spec EJ255 CP piston set (24cc) for D25 Heads New OEM STI black Nitrited 2017+ crankshaft New OEM STI connecting rods King Performance Rod
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