Kooks 2-1/8" x 4" 304 stainless steel weld-up custom header kit — same 2-1/8" primaries as the WK2850 with the largest 4" merge collector for race-only applications. For dedicated race engines where even a 3-1/2" collector becomes the next restriction.
Universal application. Customer supplies head flanges, gaskets, bolts, and fabrication labor.
Kooks Headers & Exhaust has been hand-building stainless headers and exhaust systems in Statesville, North Carolina since 1962. Every J-bend and merge collector in this kit is sourced and inspected in the same shop where the company's racing legacy was built. 304 stainless construction handles race-level heat cycling.
Includes 12 x JB-213-30-18-304 (2-1/8" J-bends) and 2 x 9911S (2-1/8" x 4" merge collectors).
