JE Pistons "FSR" Forged Pistons w/ Rings (9.5:1): Subaru EJ257 Block with EJ20 Head #30945

JE Pistons has the most dedicated, passionate personnel designing and manufacturing parts that are BATTLE TESTED, and considered BEST IN CLASS by today's most demanding sport compact professionals. Whether you're into ROAD RACING, DRIFTING, DRAG RACING, or just finding a piston that can withstand the most EXTREME demands, JE can help. JE has experience developing custom pistons for every sport compact make and model imaginable, the most complete lineup with hundreds of parts on the shelf ready to ship, over 40 new shelf parts recently designed, and more under continual development.

SUBARU EJ257 BLOCK WITH EJ20 HEAD
NOTE: NOW COMPATIBLE WITH EITHER OEM OR AFTERMARKET RODS!
**** Piston Profile Matches EJ20 Combustion Chamber. No Cylinder Head Mofications Necessary.

• New high strength FSR forging design! JE Pistons new FSR forgings are both strong and lightweight! The new FSR design has undergone extensive on-track testing to ensure flawless performance under the most demanding conditions.
• 2618 T6 high tensile forged aluminum
• Specifically engineered for high horsepower Subaru engines.
• Dome and dishes feature smooth flowing radii for excellent flame travel.
• 1.2 x 1.2 x 2.5mm ring widths.
• .905 x 2.250 straight wall carbon steel wrist pin provided.
• Pin fitting and Tru Arc locks included
• JE Pro Seal Rings Included
• Piston Profile Matches EJ20 Chamber Profile

Stroke: 79mm
Rod Length: 130.5mm
C/D: 30.7 mm
Head CC's: 48.0
Compression Ratio: 8.5:1
Dome CC's: -16.4 (99.5mm), -16.7 (99.75mm), -17.0 (100.0mm)
Gram: 411 (99.5mm), 414 (99.75mm), 416 (.100.0mm)