Flowmaster 30 Series Race Muffler 3 1/2" #53531-12 Product Type_Broach Bushing 100 x 8g x 3/4

100 x 8g x 3/4 S/S T304 CSK SQ/DR Ribbed Surefix Screws

Left Hand Spiral Right Hand Cutting

Cutting diameter D1 11

The MSD 6AL Ignition Control set the standards that other ignitions strive to reach

Flowmaster 30 Series Race Muffler 3 1/2" #53531-12 Product Type_Broach Bushing 100 x 8g x 3/4The Delta Force 30 series race mufflers utilize Flowmaster's patented Delta Flow technology and are designed for race applications needing to meet the most stringent decibel level requirements at the track. These mufflers have excellent power characteristics with maximum sound reduction qualities. Durable fully welded 16 gauge aluminized steel two chamber race muffler Good decibel reduction over open headers No internal packing to blowout Race proven