DTR Design TSX 4-2-1 street header TSX CL7/CL9 TSX:44mm standard 2.5 outlet DTR Design (imported)304 stainless B-series

DTR Design (imported)304 stainless  B-series 4-2-1  two step header 44mm - 48mm to 50mm secondary with a standard 64mm donut gasket exit

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

304 Stainless using laser cut flange and stainless steel spring hardware

4-2-1 design for midrange and top end power

DTR Design TSX 4-2-1 street header TSX CL7/CL9 TSX:44mm standard 2.5 outlet DTR Design (imported)304 stainless B-seriesDTR design CL7 CL9 TSX 4 2 1 street header available in standard 44mm stepped or 48mm stepped big tube tri Y Max. 4 2 1 design for midrange and top end power. 304 stainless steel with all supplied adapter pipe gaskets and bypass hardware. US modified 2. 5 3 v band transition option available for high output 48mm include female v band ring and clamp for exhaust retrofit. 48mm Tri Y Max only recommend for max effort high compression builds.