JE Pistons BMW S50B30US 11.5KIT Set of 6 Pistons

If you're rebuilding the engine in your BMW S50B30US, these JE Pistons are a solid choice for serious performance. JE Pistons has been making forged pistons for decades, and this set is built specifically for your engine to give you the best combination of durability and power. They're made from 2618 aluminum, which is strong enough to handle the demands of high-performance applications.

What sets these pistons apart is their design. They feature JE's proprietary Forged Side Relief (FSR) forging, which helps reduce friction and skirt wear, saving weight and potentially improving power. Depending on the specific application, you might also find an accumulator groove to help maintain a good ring seal, and a skirt coating to further cut down on friction and noise. This kit includes everything you need to get them installed: high-quality wrist pins, locks, and JE's Pro Seal premium piston rings. Everything is forged and machined right here in the USA.

This set is designed for a 3.406-inch bore and a 11.5:1 compression ratio, featuring an inverted dome/dish design. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete engine build, always refer to the manufacturer's installation instructions to ensure proper fitment and performance.