JE Pistons GM LS1 3.898 in. Bore - 1.340 CD -2cc - Flat Top - Single Piston

If you're working on a Chevrolet LS1 engine and need a replacement piston, this single piston from JE Pistons is a solid option. JE Pistons has been making forged pistons for a long time, and they build these right here in the USA using 2618 aluminum. This material gives them the strong tensile strength needed for engines that see a lot of action.

This particular piston is designed with a flat top and a 3.898-inch bore, and it's made to fit specific LS1 engine applications for optimized performance and durability. They also use a proprietary Forged Side Relief (FSR) design, which helps reduce friction and power loss by using a narrower skirt. Some applications also feature a skirt coating to cut down on friction and wear, while an accumulator groove can help improve ring seal for more consistent power delivery.

Keep in mind that this piston is not CARB approved and cannot be shipped to California. It's a single piston, so make sure you order the correct quantity for your engine build.