JE Pistons 389616 Ultra Series BMW-Toyota B58B30 Kit 82.00/33.20/-9.10

Ultra Series - BMW-Toyota B58B30 Piston Kit - 82.00/33.20/-9.10 Ultra Series forged pistons from JE are the industry’s strongest, most fully featured pistons available off the shelf. Offered for BMW B58 Engines. Ultra Series Pistons feature JE’s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Equipped with the following custom level features JE’s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Designed specifically for BMW B58 Engines. To provide optimized performance durability Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings Made 100% in the USA Smooth Crown Finish: Deburs all areas around the valve pocket and dome area, to reduces stress risers and prevent hot spots.