What material are these JE 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 like racing engines.

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

The FSR design helps to minimize friction and power loss. It achieves this through reduced skirt width and a shorter wrist pin, which also contributes to saving weight on the piston assembly.

Are these pistons compatible with all 427 Big Block Ford engines?

This set is designed for the 427 BBF engine with a 4.250-inch bore. It's always recommended to verify the specific bore size and compression distance requirements for your particular engine build against these piston specifications.

JE Pistons 427 BBF INV-DOME Piston Set 162117

Name: JE Pistons 427 BBF INV-DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-427-bbf-inv-dome-set-of-8-pistons-t14-295155
Price: 1129.82 USD
Availability: BackOrder

JE Pistons 427 BBF INV-DOME Set of 8 Pistons

$1129.82

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 427 BBF INV-DOME Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Set includes 8 pistons for a 427 Big Block Ford (BBF) engine.
Forged in the USA using 2618 aluminum for high tensile strength and durability.
Features an inverted dome design with a -16.0 cc volume.
Piston bore is 4.250 inches with a 1.670-inch compression distance.
Utilizes a 0.975-inch wrist pin.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications like racing. This set is specifically designed for the 427 Big Block Ford (BBF) engine, featuring an inverted dome design to optimize combustion chamber volume and compression ratio for your build. Each piston measures a 4.250-inch bore with a 1.670-inch compression distance and utilizes a 0.975-inch wrist pin.

JE Pistons brings over 75 years of experience to their forged pistons, and this set is no exception. They are engineered, forged, and machined 100% in the USA, ensuring a high level of quality control. The proprietary Forged Side Relief (FSR) design is incorporated to minimize friction and power loss by reducing skirt width, while also saving weight with a shorter wrist pin. Depending on the specific application, these pistons may also feature an accumulator groove to help reduce combustion gas pressure, improving ring seal and preventing flutter. A skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This set includes eight pistons, designed to provide the ultimate combination of durability and performance for your engine. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.