JE Pistons BBF M-6049-SCJ -39cc Set of 8 Pistons

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is designed for BBF engines with a 4.390-inch bore and features a -39cc inverted dome volume, which is crucial for achieving specific compression ratios in modified builds. JE Pistons brings over 75 years of experience to the table, engineering and machining these pistons entirely in the USA to ensure top-notch durability and performance for racing and high-output street use.

The proprietary Forged Side Relief (FSR) forging design is a notable feature, minimizing friction and power loss by reducing skirt width. This design, along with a shorter wrist pin, also helps save weight. Depending on the specific application, these pistons may include an accumulator groove to reduce combustion gas pressure, which helps prevent ring flutter and improves ring seal for consistent power delivery. Some applications also feature a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This set includes eight pistons, each designed specifically for the BBF engine and its intended use, optimizing both performance and longevity. While these pistons are engineered for maximum output, please note they are not CARB approved and cannot be shipped to California. If you're building a high-performance engine where reliability and power are paramount, this set of JE Pistons is a solid option.