JE Pistons Subaru EJ25 Ultra Series 8.5:1 (Set of 4) 99.75mm bore - 79mm stroke (361328)

Product Description

361328

For Subaru EJ Series

JE Pistons Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas-nitrided carbon steel rings are included.

Bore Diameter

99.75

Compression Height

1.209

Piston Volume

-16.9

Cylinder Head

EJ257 STI

Piston Pin Outside Diameter

0.905

Piston Pin Length

2.250

Piston Pin Material

9310

Ringset Included

Yes

Top Compression Ring Thickness

0.0475

Second Compression Ring Thickness

0.048

Oil Ring Thickness

0.0995

Piston Material

2618

Forging Type

FSR

Piston Avg Weight

427

Pin Wall Thickness

0.210

Piston Type

Dish

Product Market

Sport Compact

Prop 65 Yes/No

Yes