Delivery info

From then, delivery is generally is the same day / 2 days (depending on your location). Cut off time 2 PM PST.

30 days returns

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CP Forged Pistons Subaru EJ255 WRX Bore 100mm +0.5mm 8.4:1 CR SC7431

CP Forged Pistons Subaru EJ255 WRX Bore 100mm +0.5mm 8.4:1 CR SC7431

CP Standard Shelf Pistons Features

Dedicated forgings

Balanced to + or 1 gram

Wrist pins provided at no cost

Pin fitting provided at no cost

Accumulator Grooves

Dual forced pin oilers

Pick lock grooves

Fully CNC machined

USA Made



Make: Subaru

Model: Impreza WRX

Engine: EJ255

Compression Ratio: 8.4:1

Pin Size: 23mm

Compression Height: 1.208

Rod Length: 130.5mm

Stroke: 79

Bore: 100mm

Material: 2618 Alloy

Bore Size: +0.5mm

Standard Pin (Included): 905-2500-18CP1S

Upgraded Pin (Not Included): 0.200" Wall: 905-2500-20CP3S or 0.260" Wall: 905-2500-26CP3S

Pin Locks (Included): None

Ring Part#: RS1658-3937-0

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