90° 51mm Aluminum Elbow with Welded Flange for 12mm MAP Sensor.

The "Heavy Duty" I-Beam series connecting rods for Mitsubishi 4G63 EVO 1-9 are designed for high-power/supercharging applications. Manufactured from the highest quality 4340 high-tensile steel, they feature a specially optimized shape for high performance and extreme durability. The bushings are made from AMPCO 18 material, which offers excellent wear and fatigue resistance, and have a radial groove that acts as an oil reservoir. They are shot-peened to relieve material stress and undergo multi-stage heat treatment to increase their rigidity. Strict tolerances in the production process ensure a perfect fit and optimize oil clearances. Flex and twist are strictly controlled. Each connecting rod includes 3/8" ARP 2000 head bolts with a strength of 220,000 psi. Optionally, ARP L19 material with a strength of 260,000 psi can be purchased. The complete kit includes ARP Moly lubricant and comprehensive assembly instructions. Additional machining processes

Dowel sleeves for perfect fit and accurate reassembly

Flanged cap relief for increased rod big end integrity in extreme applications

Grooves on the thrust face for weight reduction

ZRP Connecting Rod Technical Features

I-beam shape for increased rigidity

Forged in two pieces for high strength

Shot peened for increased fatigue resistance

Magnaflux inspection ensures the consistency of the forged material meets our high quality standards

Double rib caps for greater support

Multi-stage heat treatment for maximum strength, dimensional stability and fatigue resistance

CNC machined to superior tolerances, with accuracy up to 0.0002″

Center-to-center distance maintained within 0.001″ tolerance

Finite Element Analysis (FEA) - Computer-generated stress analysis of connecting rods

Optimal balancing for sets with matched weight of ± 1 gram