JE Pistons LS Series 15-Degree Dome Pistons 312125

Name: JE Pistons LS Series 15-Degree Dome Pistons
Brand: JE Pistons
SKU: JEP-312125-8
Price: 915.29 USD
Availability: InStock
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Part Number: JEP-312125-8

$915.29

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JE Pistons LS Series 15-Degree Dome Pistons

LS ASYM DM 4100STRKR
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JE Pistons LS Series 15-Degree Dome Pistons 312125

JEP-312125-8

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Part Number: JEP-312125-8

Estimated Ship Date: Nov 13, 2026

$915.29

$1,016.99

(Save $101.70)

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Estimated Ship Date: Nov 13, 2026 Would you rather pick it up?

Overview

Brand:

JE Pistons

Manufacturer's Part Number:

312125

Part Type:

Pistons

Product Line:

JE Pistons LS Series 15-Degree Dome Pistons

Summit Racing Part Number:

JEP-312125-8

Item Number:

2621480

UPC:

193564034526

Piston Rings Included:

Bore (in.):

4.070 in.

Bore (mm):

103.378mm

Stroke:

4.100 in.

Engine Stroke Type:

Stroked

Actual Engine Displacement:

7.0L/427

Rod Length:

6.125 in.

Piston Style:

Dome, with two valve reliefs

Piston Material:

Forged aluminum

Compression Height (in.):

1.065 in.

Piston Head Volume (cc):

-1.10cc

Wrist Pin Style:

Press-fit or floating

Wrist Pin Retainers Included:

Yes

Wrist Pin Included:

Yes

Pin Diameter (in.):

0.927 in.

Piston Ring Thickness:

0.047 in. x 0.059 in. x 0.118 in.

File Fit:

Gapless:

Top Ring Thickness:

0.047 in.

Second Ring Thickness:

0.059 in.

Oil Ring Thickness:

0.118 in.

Remanufactured:

Quantity:

Sold as a set of 8.

JE Pistons LS Series 15-Degree Dome Pistons

One of the best forged pistons for your high performance LS engine, JE Pistons 15-degree domed pistons. They feature JE's FSR (forged side relief) engineered for today's high-power normally aspirated and forced induction LS engines. The exclusive asymmetrical skirt maintains a larger skirt area on the heavily stressed major thrust side, while reducing friction with a smaller skirt on the minor thrust side. The result is high-strength, lightweight pistons that outperform the competition. Select the LS Series pistons needed for your performance setup.

Features:

* Designed with 15-degree valve pockets
* Accumulator grooves
* Double pin oilers
* Offset wrist pin
* Includes round wire locks
* Designed for 1.2/1.5/3mm and 1.5/1.5/3mm rings