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 where durability is critical.

Are these pistons compatible with all GM engines?

These pistons are specifically designed for GM 8-cylinder engines with a 4.500-inch bore. It's important to verify that your specific engine configuration matches these specifications for optimal performance and fit.

What is the Forged Side Relief (FSR) design?

The proprietary Forged Side Relief (FSR) design is a feature of these pistons that helps minimize friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also contributes to saving weight.

JE Pistons Forged Dome Piston Set 330138 - GM 4.500in Bore

Name: JE Pistons GM 4.500in Bore Dome Pistons - Set of 8
Brand: JE Pistons
SKU: je-pistons-je-pistons-gm-4-500in-bore-dome-pistons-set-of-8-t14-515828
Price: 1232.52 USD
Availability: BackOrder

JE Pistons GM 4.500in Bore Dome Pistons - Set of 8

$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 GM 4.500in Bore Dome Pistons - Set of 8. Forged in the USA for high-demand performance applications.

Key Features

Set of 8 forged dome pistons for GM 8-cylinder engines.
Designed for a 4.500-inch bore.
Constructed from 2618 aluminum for high tensile strength in performance applications.
Forged and machined 100% in the USA.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
May include an accumulator groove to improve ring seal and reduce flutter.

This piston set is designed for GM 8-cylinder engines with a 4.500-inch bore. Always consult manufacturer specifications for precise fitment details.

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Product Details

If you're building a high-performance GM engine that needs to handle serious power, this set of 8 forged dome pistons from JE Pistons is a solid choice. These pistons are designed for a 4.500-inch bore and are made from 2618 aluminum, a material known for its high tensile strength, making it ideal for demanding performance applications where durability is key.

JE Pistons has over 75 years of experience in crafting racing pistons, and these are no exception. They're forged and machined entirely in the USA, ensuring a high level of quality control. The proprietary Forged Side Relief (FSR) design helps minimize friction and power loss by reducing skirt width, and the shorter wrist pin also saves weight. Depending on the specific application, these pistons may also feature an accumulator groove to help reduce combustion gas pressure, improving ring flutter and seal for consistent power. A skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to a quieter operation.

This set is specifically designed for each engine and use application to provide optimized performance and durability. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a truly custom build, always refer to the manufacturer's detailed specifications and installation instructions.