Crawford Built Short Block STI EJ257 S3L-X FSR | S01141 Crawford

All components engineered and manufactured by Crawford Performance have been tested for ultimate performance and maximum dependability on and off the race track. For over 2 decades they have tested all combinations of upgrades for the turbo-charged EJ20, EJ25, and more recently the new FA20 Subaru engines. Crawford has pushed these engines to there breaking points to determine which components fail at what level. From that research they have come up with forged internals to keep your engine strong enough to withstand your desired power level. 

S3L-X FSR: RATED TO 600+WHP (720+BHP)

• FSR: Billet Piston Forging Upgrade – Stands for “Forged Side Relief” 
• CrawfordSPEC Rods
• Upgraded Bearings

ABOUT FSR PISTON UPGRADE

Piston forging developed by Crawford Performance. Although the forging style is available to the public, skirt length and dish design is exclusive to Crawford Performance. This forging upgrade features:

•  100% CNC machined from high quality 2618-T6 wrought aluminum bar stock
•  Specifically designed for high horsepower road and drag race engines
•  Internal and external bracing (bridge-like design) provides a more rigid construction while minimizing overall weight
•  Billet means pistons are machined on every surface allowing for all unnecessary weight to be removed during manufacturing, reducing excess friction/heat from high horsepower applications
•  Weight reduction of up to 32 grams
•  Includes high quality 9310 steel wrist pins
•  Reduced skirt width and shorter wrist pin when compared to traditional “full round” style forgings. The narrow skirt helps minimize piston contact with the cylinder wall that can cause friction and power loss while the shortened wrist pins reduces the overall weight.

ABOUT CRAWFORDSPEC RODS

Every CrawfordSPEC rod is designed at a specific length, engineered by and exclusive to Crawford Performance. They have worked side-by-side with Pauter Rods to create a design with the following results:

•  Longer than stock length not only increases strength but also increases the rod ratio which allows for smoother and more efficient power delivery
•  Billet vs. Forged, made with the strongest steel available in the industry: 4340 chrome-moly 

Recommended parts to be replaced:

Genuine OEM Head Gaskets

Genuine OEM Intake Manifold Gaskets

Genuine OEM Exhaust Manifold Gaskets

Genuine OEM Water Pump Gasket

Genuine OEM Oil Pump 

Genuine OEM Oil Pump Main Seal

11mm ARP Head Studs (12 per box)

NGK One Step Colder Iridium Spark Plugs

K&N Oil Filter

5 Quarts of Motul Break-In Oil (we recommend running this for at least 1000 miles)