2.5 MZR Connecting Rods H Beam MZR Rods

Molnar Technologies

Molnar Technologies H Beam 2.5L MZR connecting 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 MZR engine connecting rods are fitted with highly durable premium bronze bushings for use with floating pin type pistons. Each rod set for the 2.5 MZR engines includes ARP fasteners, lubricant and installation guidelines.

All Molnar Mazda MZR H beam connecting 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. These rods are an excellent upgrade component for high performance and racing 2.5L naturally aspirated, NOS boosted and MZR turbocharged engines.

H Beam Mazda MZR 2.5 Connecting Rods

Molnar Mazda  2.5 MZR connecting rods

Mazda MZR Connecting Rod

Molnar 2.5 MZR 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

Mazda MZR


$518.83 $448.11
5.976 MZR 2.5 with 20mm wrist pin 552 Stock 20mm 0.859 0.708

$518.83 $448.11
5.976 MZR 2.5L with 21mm wrist pin 552 Stock 21mm 0.859 0.708


If you did not find the 2.5L Mazda 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 site yet.