ZRP RODS – CONNECTING RODS SET BMW M50B25 / M52B25 HD SERIES

The I-Beam connecting rods for the Mazda 2.0L MX5 are made from high-strength 4340 steel and are designed for high performance, extreme durability, and superior rigidity. The bushings are made from AMPCO 18 material for excellent wear and fatigue resistance and feature a radial oil reservoir groove. They are shot peened to relieve material stress and multi-stage heat treated to increase rigidity. Tight manufacturing tolerances ensure a perfect fit while optimizing oil clearances. Bend and twist are tightly controlled. Each connecting rod includes ARP 2000 cap fasteners rated at 220.00 psi; optional ARP L19 material is available as an upgrade. The connecting rod kit comes with ARP moly and complete installation instructions.
Additional MachiningCentering sleeves for a perfect fit and accurate reassemblyEmbossed cap with lip for improved big end integrity in extreme applicationsThrust face grooves for weight reductionTechnical Features of ZRP Connecting RodsTwo-piece forging for high strengthShot peening for improved fatigue lifeMagnaflux Inspection ensures that the consistency of the forged material meets our high quality standardsDouble-rib caps for increased supportMulti-stage heat treatment for maximum strength, dimensional stability, and fatigue resistance.CNC machined for superior tolerances, accurate to within 0.0002″Center-to-center is held to within 0.001″Finite Element Analysis (FEA) Computer-generated stress analysis of connecting rodsOptimal balance for weight-matched sets of ± 1 gramAdditional InformationEngine Number LF-DE, LF-VE, LF-VD, MRZ14, NCApplication 2.0L MX-5 3 / 5 / 7Bolt Size 3/8”Shape I-BEAMLength (CC) 146.25Pin Size 9.00pmBig Bore 50,023Width BE 21.82Weight Size 515SET of 4ARP2000 fastening gradeSTANDARD SeriesWeight 515