Flowmaster 40 Series Delta Force Top Ten Race Muffler - 4" Center Inlet / 4" Center Outlet - Aggressive Sound - 13.25" x 10.00" x 5.00" HXY2421 Hydraulic Roller - XFI XE-R:

Hydraulic Roller - XFI XE-R: High rpm street/strip with XE-R lobe designs

Precise laser cut vent holes increase the breathability and comfort of the shoe allowing the driver to focus on winning their race

One gallon container treats 4 to 6 tires

019 in Undersize

Compatibility with large displacement 351W based engines

Flowmaster 40 Series Delta Force Top Ten Race Muffler - 4" Center Inlet / 4" Center Outlet - Aggressive Sound - 13.25" x 10.00" x 5.00" HXY2421 Hydraulic Roller - XFI XE-R:Single chamber. The 10 Series race mufflers are intended for racing applications and utilize Flowmaster's patented Delta Flow technology for maximum performance. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Will provide a noticeable dB reduction over open headers. Please call the Flowmaster tech line for assistance with specific dB requirements and applications. Durable fully welded 16 gauge