What material are these JE Pistons made from?

These pistons are forged from 2618 aluminum. This alloy is chosen for its high tensile strength, which is necessary for high-demand performance applications like racing engines.

What is the Forged Side Relief (FSR) design?

The FSR design is a proprietary forging from JE Pistons. It helps reduce friction and power loss by using a reduced skirt width and a shorter wrist pin, which also contributes to saving weight.

Are these pistons compatible with nitrous oxide (NOS) systems?

Yes, the 'W/NOS' in the product name indicates these pistons are designed with nitrous oxide applications in mind. The 2618 aluminum construction and specific design features help them withstand the increased cylinder pressures associated with nitrous.

JE Pistons BBC BIG CHIEF W/NOS Piston Set 243319

Name: JE Pistons BBC BIG CHIEF W/NOS Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-big-chief-w-nos-set-of-8-pistons-t14-295571
Price: 1232.52 USD
Availability: BackOrder

JE Pistons BBC BIG CHIEF W/NOS Set of 8 Pistons

$1232.52

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

JE Pistons BBC BIG CHIEF W/NOS Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits Big Block Chevrolet engines.
Set includes 8 forged pistons.
Forged in the USA from 2618 aluminum for high tensile strength.
Features a proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
Dome piston design.
4.610 inch bore size.

This piston set is designed for Big Block Chevrolet engines with a 4.610 inch bore. Check manufacturer specifications for complete compatibility details.

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Product Details

If you're building a high-performance Big Block Chevrolet engine, especially one intended for nitrous oxide (NOS) applications, a strong set of pistons is crucial. These JE Pistons Big Chief pistons are forged from 2618 aluminum, a material known for its high tensile strength, making them well-suited for the demanding conditions of racing and high-horsepower builds.

JE Pistons has been in the forged piston game for over 75 years, and they build these right here in the USA. They use a proprietary Forged Side Relief (FSR) design, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, saving weight too. Depending on the specific application, these pistons might also come with an accumulator groove to help manage combustion gas pressure, leading to better ring seal and more consistent power. Some applications also feature a skirt coating to further reduce friction and wear, which can also quiet down engine noise.

This set includes eight pistons, each designed specifically for the Big Block Chevrolet engine and its intended use, aiming for that sweet spot between durability and performance. They feature a dome design and have a 4.610-inch bore size, a 1.120-inch compression distance, and a 0.990-inch wrist pin. Keep in mind these are not CARB approved and cannot be shipped to California.