CMI Big Block Chevy Big Sport Tube Exhaust System, 2-1/8" x 2-1/4", Stepped Primaries 

CMI Big Block Chevy Big Sport Tube Exhaust System, 2-1/8" x 2-1/4", Stepped Primaries, Polished

These “Big Tubes” offer a large 2-1/8" x 2-1/4" Stepped primary, straight back superior long tube header designed for both racing or any high-performance application. These straight, 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 Tubes headers deliver peak performance and power from naturally aspirated engines. The headers can be built to your custom measurements based on your motor.

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