Ultra connecting rods aremade entirely in the U.S.A.Every Ultra connecting rod isproduced from speciallyformulated Timken 4330V steel.This material is thenprecision forged in Michiganand fully machined in ourFostoria, Ohiofacility.
Many geometricnuances have been incorporatedinto the design of Ultraconnecting rods. These designfeatures enhance the Ultraagainst specific loads andstresses which are applied toconnecting rods subjected tohigh load, high RPMapplications. Ultra connectingrods are fastened by highalloy cap screws madespecifically for severe dutyservice by ARP Inc. Producedwith rolled threads, theseunique bolts offer improvedthread engagement for asmoother more consistent netclamping load. To eliminatedeformation and extrusion onlyAMS 642 bronze alloy is usedwithin the wrist pin housingbore.