JE Pistons BMW N54B30 Ultra Series Set of 6 Pistons Inv Dome/Dish 3.327 Bore 1.244 CD 0.866 Dia

JE Pistons is well-known for building strong, reliable engine components, and their Ultra Series pistons are a prime example of that commitment. If you're building a high-performance BMW N54B30 engine, especially one that will see significant boost, these pistons are designed to handle the extreme cylinder pressures that come with it. They are crafted from 2618 aluminum, a material chosen for its strength and ability to withstand high temperatures and stresses.

What sets these Ultra Series pistons apart is JE's proprietary Aligned Grain Flow forging technology. This process maximizes the material's tensile strength, giving these pistons a solid foundation for demanding builds. You'll also find several custom-level features included right out of the box. The thermal barrier crown coating helps reflect heat, keeping piston crown temperatures down and improving exhaust gas scavenging. A skirt coating is applied to reduce friction and wear on both the piston skirts and cylinder walls, which also helps quiet things down, particularly during a cold start. Lateral gas ports are integrated to help maintain a strong ring seal even at high RPMs and under high boost conditions, ensuring consistent power delivery. These pistons are also designed with optimized pin oiling to keep the wrist pin and related components well-lubricated, reducing heat and wear.

This set includes six pistons, each with an inverted dome/dish design, a 3.327-inch bore, and a 0.866-inch pin diameter. They are built to handle the demands of high-horsepower racing engines and are made 100% in the USA. Please note that these pistons are not CARB approved and cannot be shipped to California.