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JE Pistons 181926 Forged Flat Top Piston Set Bore Alloy - 4.040 2618 8-Pack

Manufacturer

Picture for manufacturer JE Pistons

Part Number

181926
5 reviews
Sale Price

$1,043.99

Estimated ship date Sunday, November 15

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Product Details

JE Pistons 181926 is a premium forged piston set engineered for high-performance small block Chevy builds. Manufactured from 2618 aluminum alloy for exceptional strength and heat resistance, these pistons feature a 23-degree flat top design optimized for naturally aspirated and forced induction applications. With a 4.040-inch bore, 1.550-inch compression distance, and 0.927-inch pin diameter, this set is designed to fit 3.480-inch and 3.500-inch stroke crankshafts.

Key Features:

  • Application-specific forgings ensure optimized, uniform crown thickness for maximum durability
  • Contact reduction groove minimizes frictional drag for improved efficiency
  • Accumulator groove increases top ring stability and sealing performance
  • CNC-machined side relief with lower support band provides additional skirt strength
  • Honed pin bores for precise fitment and reduced friction
  • Double pressure-fed pin oilers enhance lubrication
  • Wire locks included for secure pin retention

This complete set includes 8 matched pistons, ensuring consistent compression and balanced performance across all cylinders. Recommended ring set: J10008-4040-5 (sold separately). Backed by over 60 years of racing piston innovation, JE Pistons delivers the reliability and performance demanded by professional engine builders and racing enthusiasts.

Products specifications

Block Height

9

Bore

4.035

Bore (in)

4.040 in.

Bore (mm)

102.616mm

CID

359

Comp Height

1.545

Comp Ratio @ 58CC

11.2:1

Comp Ratio @ 64cc

10.3:1

Comp Ratio @ 76CC

9.1:1

Compression Distance (in)

1.550 in.

Dome Volume

-5

Gram Weight

449

Notes

0.290 inch deep intake pocket.

Oversize

0.035

Pin Diameter (in)

0.927 in.

Piston Head Volume (cc)

+5.00cc

Piston Material

Forged aluminum

Piston Ring Thickness

1/16 in. x 1/16 in. x 3/16 in.

Piston Style

Flat top, with two valve reliefs

Quantity

Sold individually.

Rod

5.7

Stroke

3.5

Wrist Pin Style

Press-fit or floating

Add-On

J10008-4040-5

Industry

Automotive

Piston Head Type

Flat

Piston Avg Wt

449

Oil Ring Thickness

0.188

Category Hierarchy

Pistons>Piston Kits

Bore Diameter

4.040

Piston Material

2618

Piston Pin Wall Thickness

0.150

Compression Height

1.550

Add-On

927-2500-15-51S

Engine

SMALL BLOCK CHEVROLET

Piston Pin Length

2.500

Product Market

Domestic

Piston Volume

-4.3

Cylinder Head

CHEVROLET 23 DEG 20/30

Out of Stock Message

Call for Availability

Make

Chevrolet

Piston Pin Outside Diameter

0.927

Add-On

927-042-CS

Ringset Included

No

Second Compression Ring Thickness

0.064

Piston Pin Material

5115

Forging Type

Round

Top Compression Ring Thickness

0.064

Piston Quantity

8

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Wrist Pin Outer Diameter

0.927

Cheapest priced ARP head studs on the internet. A++ I will definitely do more business with Autoplicity.

Processed and shipped fast. I was a little upset with them shipping my Eibach springs in the Eibach box, and not repackaging it. Everyone could see the box, and knew what was in it. But this will not stop me from ordering again.

Found what I needed at an unbeatable price, easy purchase! No issues

The correct product that I ordered, and easy to find through there web site.thanks

Autoplicity, was very easy to use, very fast, and an enjoyable experience. I would recommend to my closest friends!!

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