Hedman's Standard-duty, Uncoated Hedders are manufactured using 18 gauge, mandrel bent primary tubes (some models built using thicker 16 or 14 gauge tubing), and 1/4 flanges (some models use 3/8"...
The metallic-ceramic coating introduced by Hedman is known as HTC or Hi-Tech Coating and is the very best thermal coating available for your headers. HTC is bonded to headers to resist abrasion and...