DTR Design TSX 4-2-1 street header TSX CL7/CL9 TSX:44mm standard 2.5 outlet K-Series Titanium exhaust stud kit

K-Series Titanium exhaust stud kit design to replace factory steel stud and nut

44mm step to 48mm  megaphone and reverse cone 3” exit with v-band kit

1/8NPT universal for EGT adapter

Available for B18-B20 and high output B20 (54mm secondary) 4-2-1 design is great for midrange and top end power with maximum ground clearance for street driven longevity

Built per application

DTR Design TSX 4-2-1 street header TSX CL7/CL9 TSX:44mm standard 2.5 outlet K-Series Titanium exhaust stud kitDTR 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.