Manley "H" Beam connecting rods are manufactured from 4340 forgings to the same exacting standards developed and approved by our original equipment customers.
There is a vast difference in quality between a Manley "H" Beam and the "other" inexpensive H-Beams on the market. Weight matched to +/- 1.5 grams.
Perfectly round big and small ends. Bend and twist is tightly controlled.
SR20 rods can be machine to accept the 19mm bearing.