Molnar Technologies H Beam BMW N54 and BMW N55 rods are machined from billet 4340 steel, and then heat treated to provide improved strength. To make the rods even stronger, they are shot peened to which also increases fatigue life. All Molnar BMW connecting rods are fitted with highly durable premium bronze bushings for use with floating pin type pistons. Each rod set for the BMW N55 and N54 series engines includes Molnar Technologies proprietary ARP2000 fasteners, lubricant and installation guidelines.
All Molnar N55 and N54 rods are finished in the United States at the Molnar Technologies shop in Michigan. Critical rod dimensions are are held to very precise tolerances of +/- .0001 of an inch, which is the tightest tolerance you will find in the performance and racing aftermarket.