Engine

Forged piston set manufactured by Omega Pistons for the EJ25 engine in WRX/STI models from 2006-2013 (V9+). Supplied in 99.50mm standard bore plus 99.75mm and 100.00mm oversize.

Forged piston set manufactured by Omega Pistons for the EJ20 engine in JDM-spec STI models from 2003 onward (V9+). Supplied in 92.00mm standard bore plus 92.25mm, 92.50mm and 93.00mm oversize.

Forged piston set manufactured by Omega Pistons for the EJ20 engine in STI models from 2001-2005 (V7-V8). Supplied in 92.00mm standard bore plus 92.25mm and 92.50mm oversize.

Xtreme H-Section connecting rod manufactured by Arrow Precision from EN24 alloy steel and rated by Arrow Precision for 600bhp and above. Ultrasonically tested, crack-detected and balanced to within a gram. Supplied with ARP bolts and assembly lube.

Forged piston set manufactured by Omega Pistons for a 2.1-litre stroker configuration of the Subaru EJ20 engine. Supplied in 92.00mm standard bore plus 92.25mm, 92.50mm and 93.00mm oversize.

M2000 connecting rod set manufactured by Arrow Precision from ultra-high-strength steel. Ultrasonically tested, crack-detected and balanced to within a gram, with a laser-engraved M2000 logo. Suited to high-boost applications where rod distortion can occur.

Arrow Precision billet crankshaft, 75mm, sold under the RCM/Arrow name for Subaru applications, reverse engineered from the OEM design. Please contact Scooby Upgrades to confirm compatibility with your vehicle before ordering.

Xtreme H-Section connecting rod (1mm shorter), manufactured by Arrow Precision from EN24 alloy steel and rated by Arrow Precision for 600bhp and above. Typically paired with a 79mm-stroke crankshaft for increased capacity and torque. Supplied with ARP bolts and assembly lube.

Xtreme H-Section connecting rod (1mm longer), manufactured by Arrow Precision from EN24 alloy steel and rated by Arrow Precision for 600bhp and above. Typically paired with a 75mm-stroke crankshaft for a smaller conrod angle and higher-revving engine. Supplied with ARP bolts and assembly lube.

Low-compression forged piston set manufactured by Omega Pistons for the EJ25 engine in WRX/STI models from 2006-2013 (V9+). Supplied in 99.50mm standard bore plus 99.75mm and 100.00mm oversize.