All tubes are CNC mandrel bent for optimal flow for the J-bends in this header builder kit. Made from 304 stainless steel for maximum corrosion resistance. The diameter of tubes is 2-1/2" with .049 wall thickness. This kit includes (2) 3/8" thick CNC laser cut flanges, of your choice. Also comes with (12) J-bends, (2) formed collectors and (2) filler diamonds to connect the tubes together. We recommend the use of 308L SS welding rod. These kits are proudly made in the USA.

Header Build Kit, all tubing included with the kit is 304 stainless steel 2-1/2" diameter, with .049 wall thickness. Kit includes (2) 3/8" thick Laser cut flanges, (12) J-bends, (2) formed collectors and (2) filler diamonds.

Stainless Works, HBK250, Header Kit, 2-1/2" Primaries, Slip-fit Collectors, Merge Collectors, Flanges, Increased Air Flow, CNC mandrel bent, 304 Stainless Steel, Mill Finish, Made in the U.S.A

Stainless Works, 2-1/2" Header builder kit.

Stainless Works 2-1/2in Header Builder Kit

Stainless Works 2-1/2" Header Build Kit

Exhaust Header Pipe Kit

Exhaust System

Header Kit

Universal