JE Pistons - Subaru Forester 2.5 XT YR: 2005-2010 [PN# 291062] SUB STI EJ257 8.5KIT
Complete Set of Pistons
Bore : 100mm
C/D : 30.7mm
Comp Ratio : 8.5:1
Dome CC : -17.3
Gram Weight : N/A
Head CC : 57.0
Oversized : 0.50
Rod : 130.5mm
Skirt Type : Full Round
Stroke : 79mm
JE Time Attack FSR Pistons
For Turbo and Nitrous Aps
Set of 4 Pistons
Included RingSet: JC4404-3938
Engine :-
Aspiration :- T
Vehicle Engine Options :- EJ255
Vehicle Interior Options :- H4 Aspiration: T
Vehicle Exterior Options :- Fuel: FI-GAS
Cylinder Type :-
Vehicle Options :- Bore100mm - C/D30.7mm - Comp Ratio8.5:1 - Dome CC-
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