Callies Ultra Enforcer +2mm I Beam Connecting Rods For WRX/STI W/ Multiphase ARP3.5 Bolts

Callies Ultra Enforcer +2mm  I Beam Connecting Rods For WRX/STI W/ Multiphase ARP3.5 Bolts
  • Callies Ultra Enforcer +2mm  I Beam Connecting Rods For WRX/STI W/ Multiphase ARP3.5 Bolts
  • Callies Ultra Enforcer +2mm  I Beam Connecting Rods For WRX/STI W/ Multiphase ARP3.5 Bolts
SKU CAL-U16710
$1,146.00

Callies Performance Products has introduced a new line of connecting rods for those racers pushing the limits of what is possible! Callies Ultra Enforcer rods are designed for boosted and very high horsepower applications. These rods are +2mm longer than stock

  • Increased mass & pressure angle archers guarantee added wrist pin stability
  • Tough AMPCO 45 pin bushings intended for heavy load applications
  • Machined from superior strength 4330, Vanadium enhanced steel
  • Robust tower flanges provided enhanced resistance to bend and twist
  • Extended mating faces and bolt gussets for superior bearing housing rigidity
  • ARP3.5 Bolts
  • Length: 5.217 / 132.5mm
  • Journal: 2.047 / 52mm
  • Pin: .905 / 23mm
  • Set of 4

About ARP3.5 Multiphase Bolts: While similar to Inconel 718, these super-alloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260,000-280,000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.