The connecting rod is designed to handle power levels far beyond the original component’s ratings in order to ensure reliability with years of continued use. Increasing rod strength often comes at the expense of increased weight, which ultimately reduces engine efficiency. To generate a balance between strength and weight, APR tested and analyzed several designs in addition to using premium alloys, advanced forging techniques and multiple strengthening treatments. APR’s Engineering Team’s design requirements resulted in a tapered H-beam design, offering exceptional strength due to the H design and weight savings from tapering, a trait most commonly associated with an A design.

We call it Performance Without Compromise.

The wrist pin end of the rod features a wear resistant bushing material made from AMPCO 45 - a high strength alloy with mechanical properties beyond that of commercial nickel-aluminum bronzes. Wear reduction is further enhanced via a pin lubrication access point at the top of the rod, feed by the engine’s oil squirters. For further weight reduction and drop in rod compatibility with OEM and APR pistons, the wrist pin end is tapered.

When modifying an engine for strength and longevity, quality is of the utmost importance. APR’s Engineering teams have ensured each rod is created with absolute quality and control in mind each step of the way. Tolerances are kept to OEM specs and the rods are balanced to within +/- 1 gram. Furthermore the rods undergo rigorous tests to backup the entire manufacturing process. Rockwell testing provides a method for testing hardness while Magnaflux or Magnetic Particle Inspection, offers a method for detecting interruptions in the physical continuity of the casting. The result is a product you can trust.