Big tube header-49028

These “Big Tubes” offer a large 2.25″ primary, straight back superior long tube header designed for both racing or any high-performance application. These straight back, taller headers are commonly used in custom high horsepower builds. These headers feature the CMI Big Tube Flex Flare Tailpipe Connection. For big-block applications, where maximum scavenging and horsepower are required, CMI Big Tube headers deliver peak performance and power from naturally aspirated engines. The headers are built with a collector width of 28” center to center and a collector height from the crankshaft of 21 ½”.