B-Series 4-2-1 BMC Race CRX EF lean k series K-series race application 4-2-1 bent

K-series race application 4-2-1 bent merge collector header

48mm Tri-Y Max only recommend for max effort high compression builds

Standard big tube k24

That section has been replaced and moved to clear

B-Series 4-2-1 BMC Race CRX EF lean k series K-series race application 4-2-1 bentB series race application 4 2 1 Bent merge collector header with megaphone and reverse cone. Built per application Multi step design, CNC machined Ultra light flange, U. S grade 304 stainless, Brush finish, stainless steel spring hardware, argon filled back purge, fully TIG Welded. Race header optional 3" v band available for exhaust connection. 3 4 weeks lead time.