Upgrade your BMW N55 or S55 engine with the Manley Performance Turbo Tuff Pro Series I-Beam Connecting Rods, part number man14449-6. Crafted from high-strength forged 4340 or 300M vacuum degassed steel alloys, these connecting rods are engineered for durability and high-performance applications. Designed with meticulous precision, they feature a center-to-center length of 5.683 inches, a big end bore of 2.110 inches, and a pin bore of 0.8671 inches (22mm pin), ensuring a perfect fit for demanding engine builds. The rods are equipped with 3/8