Specifications
- Brand
- JE Pistons
- Part #
- 181939
- UPC
- 181939

JE Pistons 400 SBC FLAT TOP Set of 8 Pistons
$1001.43
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JE Pistons 400 SBC FLAT TOP Set of 8 Pistons. Forged from 2618 aluminum for high-demand performance.
Key Features
- This is a set of eight pistons for a 400 Small Block Chevy (SBC) engine.
- The pistons are flat-top design with a -5.0cc dish.
- They feature a 4.145 inch bore size and a 1.125 inch compression distance.
- Forged in the USA from 2618 aluminum for high tensile strength.
- Includes proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
- May include an accumulator groove to reduce combustion gas pressure and improve ring seal.
Product Details
This is a set of eight JE Pistons designed for a 400 Small Block Chevy (SBC) engine. You get the pistons themselves, ready to be installed in your build. These are flat-top pistons, meaning they have a level surface on top, which is important for setting your compression ratio. They're made from 2618 aluminum, a strong material that holds up well under the high pressures and temperatures found in performance engines.
JE Pistons has been making performance parts for a long time, and these are forged right here in the USA. The forging process creates a stronger, more durable piston than casting. They've incorporated a proprietary Forged Side Relief (FSR) design, which helps reduce friction and save weight by using a narrower skirt and a shorter wrist pin. Depending on the specific application, these pistons might also come with an accumulator groove to help manage combustion gas pressure, improving ring seal and keeping power consistent. Some applications also feature a skirt coating that cuts down on friction and wear, making them quieter and last longer.
Because these pistons are specifically designed for the 400 SBC engine and the intended use, they're built to give you the best combination of durability and performance. They're intended for high-demand applications where strength and reliability are key. Keep in mind that these are not approved for sale in California due to emissions regulations.
Specifications
- Brand
- JE Pistons
- Manufacturer Part #
- 181939
- UPC
- 181939
Frequently Asked Questions
JE Pistons 400 SBC FLAT TOP Set of 8 Pistons
