CMI Big Block Chevy Big Sport Tube Exhaust System, 2-3/8" Primaries 

CMI Big Block Chevy Big Sport Tube Exhaust System, 2-3/8" Primaries, Polished

These “Big Tubes” offer a large 2 3/8″ primary, straight back superior long tube header designed for both racing or any high-performance application. These leaned, 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. This is a full polished header.

The all polished Sport Tube system is offered with a range of exhaust tailpipe options, as well as CMI's Sound Choice™ selectable silencing system. Each system includes all header attaching bolts, gaskets and cooling fittings required for installation.

Note: All CMI Systems are sold without Tailpipes