High Performance BMW N54 and N55 Connecting Rods

Molnar Connecting Rods

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.

H Beam BMW N55 and N54 Rods

Molnar BMW N54 connecting rods

BMW N55 rods

Molnar BMW N54 and BMW N55 Connecting Rod Specs Part Numbers and Application Info

  • Length Length of the connecting rod, as measured center to center, in inches.
  • Notes Additional information about specific applications
  • Wt Weight in grams, of one complete connecting rod assembly
  • Bolt Size 3/8 diameter. Rods come with ARP2000 fasteners installed
  • Jrnl Crank rod journal diameter
  • Pin Piston pin diameter, in inches or millimeters
  • BE Width of the crankshaft end of one rod
  • PE Width of the piston end of one rod
  • Part Number Molnar Technologies Connect Rod set part number
  • Price The price shown is for a complete set of rods for the engine.
Part Number Length Notes Wt Jrnl Pin BE PE

High Performance and Racing BMW 6 Cylinder Connecting Rods


$821.17 $709.24
5.683 For use in N55 engines 615 Stock 22mm 0.822 0.822


$821.17 $709.24

For use in N54 engines

NOTE: Will not fit stock pistons with tapered pin towers.

610 Stock 22mm 0.822 0.822


If you did not find the BMW engine con rods you need, please contact us for assistance. New models are constantly in development so we may have piston rods available that have not been added to this website yet.

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