What material are these pistons made from?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is necessary for high-demand performance applications where engines are pushed hard.

What is the purpose of the Forged Side Relief (FSR) design?

The FSR design minimizes friction and power loss by using a reduced skirt width and a shorter wrist pin. This also helps save weight on the piston assembly.

Are these pistons compatible with all engine builds?

These pistons are designed specifically for each engine and use application to provide optimized performance and durability. They are not CARB approved and cannot be shipped to California.

JE Pistons BBC INV DOME Piston Set 257946

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-t14-295631
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 4.310 inch bore.
Features an inverted dome dish design with a volume of -14.5 cc.
Built using 2618 aluminum for high tensile strength in performance applications.
Includes JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Pistons are forged and machined 100% in the USA.
May include an accumulator groove to reduce combustion gas pressure and improve ring seal.

This piston set is designed for 8-cylinder engines with a 4.310 inch bore. Not CARB approved and cannot ship to California.

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Product Details

JE Pistons is known for making strong, reliable forged racing pistons, and they've put over 75 years of experience into this set of BBC INV DOME pistons. These are built for high-demand performance applications, forged and machined entirely in the USA from 2618 aluminum, which gives them the high tensile strength you need when you're pushing your engine hard. They're designed specifically for each engine and use, aiming for the best balance of durability and performance, whether you're on the track or the street.

This set includes eight pistons, each with a 4.310-inch bore and a -14.5cc inverted dome dish. They feature JE Pistons' 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 include an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving the seal for consistent power. Some applications also get a skirt coating that cuts down on friction and wear on the piston skirts and cylinder walls, which also helps quiet things down a bit.

This kit comes with everything you need for an 8-cylinder engine, including the pistons, wrist pins, and locks. Just remember, these are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.