What material are these JE Pistons made from?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, making it well-suited for high-performance and demanding engine applications.

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

The FSR design features reduced skirt width and a shorter wrist pin. This helps to minimize friction and power loss while also saving weight on the piston assembly.

Are these pistons compatible with all BBC engines?

This set is designed for BBC engines with a 4.500 inch bore. It's important to confirm that this bore size and the piston dome specification match your specific engine build and requirements.

JE Pistons BBC Dome Piston Set 258286

Name: JE Pistons BBC .520 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-520-dome-set-of-8-pistons-t14-295756
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC .520 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 .520 Dome Piston Set. Forged in the USA for durability and performance.

Key Features

Fits BBC engines with a 4.500 inch bore.
Set includes 8 pistons with a .520 inch dome.
Forged in the USA using 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design reduces friction and saves weight.
Accumulator groove (application dependent) helps reduce ring flutter and improve ring seal.
Skirt coating (application dependent) reduces friction, wear, and noise.

This piston set is designed for BBC engines. Please verify bore size and other specifications match your engine's requirements.

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Product Details

JE Pistons is known for making strong, reliable forged pistons that have proven themselves on the race track for over 75 years. This set of BBC pistons is built with that same dedication to performance and durability. They are forged and machined entirely in the USA using 2618 aluminum, a material chosen for its high tensile strength, which is essential for engines pushed to their limits.

These pistons feature a proprietary Forged Side Relief (FSR) design. This means they have reduced skirt width and a shorter wrist pin, which helps minimize friction and power loss while also saving weight. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving ring seal for consistent power delivery. Some applications also benefit from a skirt coating that further reduces friction and wear on the cylinder walls, leading to quieter operation and longer life.

This kit is designed specifically for the BBC engine and includes eight pistons, each with a 4.500-inch bore and a .520-inch dome. The kit includes everything needed to outfit your engine with these high-performance components, ready for demanding use from the drag strip to wherever your racing takes you. Please note that these pistons are not CARB approved and cannot be shipped to California.