Rods-  Our forgings start with 300M steel that is created through a special high pressure closed die process.  This forging is completely CNC machined to eliminate any lapping and inclusions that could be fracture points.  All rods are magnafluxed and sonic tested before heat treat.

All rods are machined into the H-beam design by CNC to remove maximum material with the accuracy of 1/1000th of an inch.  Our crank and pin ends are CNC drilled and bored to assure accuracy, concentricity, and size.  All radii, tapping and bushing bores are CNC'd to eliminate inconsistencies, mistakes and improve weight balance.

After machining, our rods are Vacuum Furnace Heat Treated, Cryogenically Treated and Tempered for the best combination of toughness and strength.  The rods are shot peened before the ARP or SPS-CARR bolts and AMPCO 45 Bronze pin bushings are installed and rolled.  The rods are then put into matched sets by weight.

In Summary, the features of our rods:  manufactured from U.S. Made 300M steel forgings, which is 20% stronger than 4340 steel. The H-beam design with a double banded cap for ultimate strength, we use ARP2000 bolts as standard equipment (250ksi) with ARP3.5 (285ksi) and SPS-CARR (285ksi) as optional bolts, CNC machined to eliminate mistakes, Vacuum Furnace Heat Treated with Cryogenic Treatment, include AMPCO 45 Bronze Pin Bushings for maximum strength with low deformation.  After final assembly, our crank and pin ends are parallel honed to an accuracy of 50 millionths.  Taking all these features into account, you can see that we are making TOP RODS!

ARP2000 Bolts- An exclusive, hybrid-alloy developed to deliver superior strength and better fatigue properties.  While 8740 and ARP2000 share similar characteristics--ARP2000 is capable of achieving clamp loads in the 215,000-220,000psi range.  ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods.  Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.

ARP3.5 (AMS5844)- 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 270,000psi 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, Winston Cup and CART applications.

SPS-CARR- Fasteners are manufactured from a proprietarily designed material referred to as "Multiphase".  The material exhibits a minimum ultimate tensile strength of 260,000 pounds.  The related properties of ductily and elasticity are unsurpassed in comparison to the tensile strength.  The SPS-CARR bolts meet and surpass the most stringent testing and validation standards employed in the design of aerospace fasteners.