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

The FSR design helps minimize friction and power loss by using a reduced skirt width. This also contributes to weight savings, especially when paired with a shorter wrist pin.

Are these pistons suitable for a street-driven vehicle?

These pistons are forged from 2618 aluminum and feature designs like skirt coatings (in some applications) to reduce friction and noise, making them suitable for high-performance street applications. However, they are not CARB approved and cannot be shipped to California.

What is included in this piston kit?

This kit includes a set of 8 flat top pistons designed for a 4.130 inch bore, along with the necessary 0.927 inch wrist pins. It does not include piston rings, which are typically sold separately.

JE Pistons SBC Flat Top Piston Set 181958

Name: JE Pistons 400-18 SBC FLAT TOP Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-18-sbc-flat-top-set-of-8-pistons-t14-295269
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 400-18 SBC FLAT TOP 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 400-18 SBC FLAT TOP Set of 8 Pistons. Forged from 2618 aluminum for high-demand performance.

Key Features

Fits Small Block Chevy (SBC) engines with a 4.130 inch bore.
Set includes 8 forged pistons made from 2618 aluminum for high tensile strength.
Features a flat top design with a -6.00 cc dish volume.
Includes a 0.927 inch wrist pin.
Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss.
Designed specifically for each engine and use application for optimized performance and durability.

This piston set is designed for Small Block Chevy (SBC) engines. Please verify compatibility with your specific engine build.

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Product Details

If you're rebuilding a Small Block Chevy (SBC) engine for serious performance, a strong set of pistons is crucial. These JE Pistons 400-18 SBC Flat Top pistons are built to handle the demands of racing and high-output street applications. They're forged from 2618 aluminum, a material known for its high tensile strength, making them well-suited for engines that push the limits.

JE Pistons has been making performance engine components for over 75 years, and these pistons reflect that experience. They feature a proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by using a reduced skirt width. This design also contributes to weight savings, especially when paired with a shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove to reduce combustion gas pressure, which helps prevent ring flutter and improve ring seal for consistent power delivery. Some applications also benefit from a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, leading to quieter operation.

These pistons are made 100% in the USA and are designed specifically for the SBC engine to optimize both performance and durability. They feature a flat top design with a 4.130-inch bore and a -6.00 cc dish volume, and they come with a 0.927-inch wrist pin. Please note that these pistons are not CARB approved and cannot be shipped to California.