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Real experience
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PRODUCT DESCRIPTION
Product details
H-beam connecting rods for Citroën/Peugeot 1.6L TU5J4/TU5JP4 engines are manufactured from high-strength 4340 steel and designed for high performance and extreme durability. This lightweight design combines compact performance with proven reliability at high RPMs. The center-to-center length has been increased by 5.40 mm, making these connecting rods ideal for long rod applications. The bushings are made of aluminum-silicon/bronze and feature a radial groove that acts as an oil reservoir. These connecting rods have a grooved pin end that minimizes pin end deformation under high inertial loads, while also reducing weight. They are shot-peened to relieve material stress and undergo a multi-stage heat treatment to increase rigidity. Strict tolerances in the production process ensure a perfect fit and optimize oil clearances. Flex and torsion are strictly controlled. Each connecting rod includes ARP 2000 cap fasteners with a strength of 220,000 psi. Optionally, 260,000 psi ARP L19 material can be purchased as an upgrade. The complete kit comes with ARP moly lubricant and comprehensive installation instructions.
Additional machining processes:
Dowel sleeves for perfect fit and precise reassembly.
Flange cap relief for increased big end integrity in extreme applications.
Grooves on the thrust face for weight reduction.
ZRP connecting rod technical features:
Two-piece forging for high strength.
Shot peened for increased fatigue life.
Aluminum-silicon/bronze bushing with radial groove.
Magnaflux inspection ensures that the consistency of the forged material meets our high quality standards.
Double ribbed caps for added support.
Multi-stage heat treatment for maximum strength, dimensional stability and fatigue life. CNC machined to superior tolerances, accurate to within 0.0002″
Center-to-center distance is held to within 0.001″ tolerance.
Finite Element Analysis (FEA): computer-generated stress analysis for connecting rods.
Optimal balancing for weight-matched sets of ± 1 gram.
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Each reference designed for competition.
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