Manley Performance developed H-Tuff connecting rods to fill the void between standard H-beam and Pro Series I-beam connecting rods. Strengthening features unique to the H-Tuff series includes a double-ribbed pin surround and increased cross-sectional thickness in critical areas, to create a connecting rod that will handle higher boost and horsepower levels than a standard H-beam. H-Tuff rods are built to the same quality-control standards and tolerances as all Manley Performance connecting rods.
ARP2000 rod bolts
Double ribbed around piston pin