What material are these pistons made from and why is it important?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is essential for handling the extreme pressures and temperatures found in high-performance engines.

What is the Forged Side Relief (FSR) design and what benefit does it offer?

The FSR design is a proprietary forging technique used by JE Pistons. It helps minimize friction and power loss by reducing the piston skirt width and using a shorter wrist pin, which also saves weight.

Are there any special coatings or grooves included with these pistons?

Depending on the specific application, these pistons may include an accumulator groove to reduce combustion gas pressure and improve ring seal. Some applications also feature a skirt coating to reduce friction, wear, and engine noise.

JE Pistons BBC Inv Dome Piston Set 257942

Name: JE Pistons BBC INV DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-inv-dome-set-of-8-pistons-t14-295627
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC INV DOME Set of 8 Pistons

$1052.79

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 Inv Dome Set of 8 Pistons. Forged in the USA for high-demand performance applications.

Key Features

Fits 8-cylinder engines with a 4.500 inch bore.
Forged in the USA using 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
Includes an inverted dome dish with a -20.0cc volume.
Features a 1.270 inch compression distance and a 0.990 inch wrist pin.
Designed specifically for each engine and use application for optimized performance and durability.

This piston set is designed for 8-cylinder engines with a 4.500 inch bore. Please verify compatibility with your specific engine build.

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Product Details

JE Pistons is known for making well-built forged racing pistons, drawing on over 75 years of experience. They've applied that knowledge to this set of BBC Inv Dome pistons, designed specifically for high-demand performance applications. These pistons are engineered, forged, and machined entirely in the USA, ensuring you get a part built for durability and performance, whether you're on the track or just pushing your engine hard.

These pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines under heavy load. JE Pistons uses 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 in the process. Depending on the specific application, you might also find an accumulator groove, which helps manage combustion gas pressure to prevent ring flutter and improve ring seal for more consistent power. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, while also helping to quiet down engine noise.

This set includes eight pistons, each with a 4.500-inch bore and a -20.0cc inverted dome dish. The compression distance is 1.270 inches, and they use a 0.990-inch wrist pin. Please note that these pistons are not CARB approved and cannot be shipped to California. They are designed for specific engine and use applications to provide optimized performance and durability.