H-Tuff & H-Tuff Plus RodsManufactured from 4340 forgingsHeat treated, stress relieved, shot peened and 100% individually magnafluxedWeight matched sets + 1.5 gramsCap fasteners are 3/8” ARP 2000 for the H-Tuff and 3/8” ARP Custom Age 625+ for the H-Tuff PlusFlywheel horsepower range for the these rods in a 4 cylinder application is 750 with the ARP 2000 boltsand 950 with ARP 625+ bolts. In a 6 cylinder application the horsepower range is 1000 with the ARP 2000 boltsand 1200 with the ARP 625+ bolts.
 
Recommended bearings to be used: ACL 4B1185/H or Clevite® CB-1643P
 
Bridges the gap between our standard,
proven H-Beams and top of the line, best
of the best Turbo Tuff® Series rods
H-Tuff delivers a stronger rod with greater safety margin to handle
elevated boost and higher power levels for a modest price premium
over standard H-Beams. 
H-Tuff design incorporates wider beam and increased cross-sectional
thickness in critical areas
Image as reference only