JE’s Subaru Time Attack FSR 99.5mm piston set starts with 2618 T6 high tensile forged aluminum blanks. The pistons are specifically designed and engineered for extreme application use and feature 8.5:1 compression ratio. The dome and dishes feature smooth flowing radii for excellent flame travel. JE’s piston set includes .905 x 2.250 straight wall carbon steel wrist pins with Tru Arc locks along with a complete ring set.

*The 79mm stroke Time Attack FSR pistons are compatible with OEM or aftermarket rods!

Specs:

• Bore: 99.5mm
• Size: STD
• Stroke: 79mm
• Rod: 130.5mm
• C/D: 30.7mm
• Head CC’s: 57
• C/R with .040: 8.5:1
• Dome CC’s: -16.5
• Gram: 407
• Footnote: Accepts Turbo / Nitrous
• Skirt: F
• Included Ring Set: JG4904-3917