JE Pistons and Rings SUBARU EJ257 BLOCK WITH EJ20 HEAD "FSR" 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 for your Subaru WRX and STI.
- 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 2.500 straight wall carbon steel wrist pin provided
- Pin fitting and Tru Arc locks included JE Pro Seal Rings Included
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