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JE Pistons 181908R Flat Top Forged Piston 2618 Alloy 4.040 Bore 0.927 Pin

Manufacturer

Picture for manufacturer JE Pistons

Part Number

181908R
12 reviews
Sale Price

$213.99

Estimated ship date Friday, November 13

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Product Details

The JE Pistons 181908R is a high-performance forged flat top piston engineered from 2618 aluminum alloy for superior strength and thermal fatigue resistance in demanding racing and high-boost applications. With a 4.040-inch bore diameter, 1.000-inch compression distance (CD), and a 0.927-inch pin diameter, this piston is precision-machined to exact tolerances for consistent, reliable power output.

Key Features:

  • 2618 Forged Aluminum Alloy – A high-strength alloy preferred for forced induction, nitrous, and extreme duty racing environments where thermal cycling and detonation resistance are critical
  • Flat Top Design – Optimized for use with a wide range of cylinder head combustion chamber configurations
  • 4.040-Inch Bore – Precision-sized for performance engine builds requiring tight clearances and consistent ring seal
  • 1.000-Inch Compression Distance (CD) – Allows precise deck height tuning for optimal compression ratio
  • 0.927-Inch Pin Diameter – Full-floating wrist pin bore sized for strength and reduced reciprocating mass
  • 70+ Years of JE Pistons Engineering – In-house forging and industry-leading CNC machining for race-proven quality

JE Pistons has been the benchmark in forged racing pistons for over seven decades, supplying top-tier motorsports teams across drag racing, road racing, and circle track disciplines. The 181908R is manufactured at JE's California facility using proprietary forging dies and stringent quality control processes, making it a trusted choice for engine builders who demand precision and performance.

Products specifications

Oil Ring Thickness

0.218

Piston Avg Wt

370

Engine

SMALL BLOCK CHEVROLET

Add-On

927-2500-15-51S

Piston Head Type

Flat

Piston Volume

-4.3

Compression Height

1.000

Cylinder Head

CHEVROLET 23 DEG 20/30

Ringset Included

No

Add-On

927-042-CS

Piston Pin Length

2.500

Out of Stock Message

Call for Availability

Top Compression Ring Thickness

0.064

Add-On

J10008-4040-5

Piston Material

2618

Second Compression Ring Thickness

0.064

Piston Pin Material

5115

Industry

Automotive

Bore Diameter

4.040

Make

Chevrolet

Forging Type

Round

Product Market

Domestic

Piston Pin Wall Thickness

0.150

Piston Pin Outside Diameter

0.927

Category Hierarchy

Pistons>Individual Pistons

The fact that I could use my Amazon credentials made the purchase quick and easy.

Best price on the web. Very fast and easy. Thank you!

It's easy ordering so far

Fast shipping, very helpful staff, product was in stock at Autoplicity and I couldn't even find it at any other supplier. Thanks Autoplicity!

easy checkout and part in stock at the lowest price

Autoplicity has the best prices and customer service. The online chat is a great function to get more information about an item. Also they had an item in stock that I couldn't find anywhere else.

Very easy

Great shopping experience have ordered from autoplicity several times. Only downfall is they don't offer free shipping but usually the price plus shipping is less than anywhere else.

the delivery times are very very long but the price is right.

I ordered a throttle body spacer from them. They were the cheapest anywhere I've seen. They were very fat at response to my emails. Great place!!

quick and easy with extremely fast delivery

At first I did not expect Autoplicity to even carry this part, but in fact they did. Placed the order and I received the part quickly. They were the cheapest for the part after searching nearly everywhere. Will order from them again.<br>Order #8334

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