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

CMI Big Block Chevy Big Sport Tube Exhaust System, 2-1/8" Primaries, 850-1200 SC Flange, Polished

These “Big Tubes” offer a large 2 1/8″ primary, straight back superior long tube header designed for both racing or any high-performance application. They feature a “D” Port flange to match the Brodix heads on Mercury 850-1200 SC motors. These leaned, taller headers are commonly used in custom or staggered set up for your 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