99.5mm Bore CR 8.5:

Part Number: je291061

Description: JE Time Attack FSR Pistons; For Turbo and Nitrous Aps; Set of 4 Pistons; Included RingSet: JC3104-3917

Oversized: STD

Gram Weight: 407

Head CC: 57.0

Rod: 130.5mm

Comp Ratio: 8.5:1

Skirt Type: Full Round

Stroke: 79mm

Bore: 99.5mm

C/D: 30.7mm

Dome CC: -16.5

99.75mm Bore CR 8.5

Part Number: je296348

Description: JE Time Attack FSR Pistons; For Turbo and Nitrous Aps; Set of 4 Pistons; Included RingSet: JC4404-3928

Oversized: 0.25

C/D: 30.7mm

Gram Weight: 405

Rod: 130.5mm

Bore: 99.75mm

Comp Ratio: 8.5:1

Skirt Type: Full Round

Dome CC: -17.0

Head CC: 57.0

Stroke: 79mm

100mm Bore CR 8.5:

Part Number: je291062

Description: JE Time Attack FSR Pistons; For Turbo and Nitrous Aps; Set of 4 Pistons; Included RingSet: JC4404-3938

Dome CC: -17.3

Head CC: 57.0

Comp Ratio: 8.5:1

Rod: 130.5mm

Bore: 100mm

C/D: 30.7mm

Oversized: 0.50

Skirt Type: Full Round

Stroke: 79mm

Gram Weight: N/A

Fitment: 04-07 Subaru STI

Details:

JE Pistons are specifically engineered for extreme applications up to, and including, professional competition. In this environment, higher compression ratios, extreme boost levels and heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy found in every JE Piston.

*Application Specific Forgings for an Optimized, Uniform Crown Thickness *Contact Reduction Groove to Minimize Frictional Drag *Accumulator Groove for Increased Top Ring Stability and Sealing *CNC-Machined Side Relief with Lower Support Band for Additional Skirt Strength *Honed Pin Bores, Double Pressure Fed Pin Oilers and Wire Locks Included *JE ProSeal Piston Rings are included with your JE Pistons

JE Pistons are sold as matched sets.

*Custom Applications are also Available