- Hand TIG-welded stainless steel construction
- 1-3/4" headpipes step up to 1-7/8" into the collector to increase flow and improve performance
- 4" diameter straight can 11" muffler body includes matching aluminum end cap
- Removable spiral-core louvered baffle features an aggressive sound
- 18 mm and 12 mm O2 ports with adapters and plugs
- Partial heat shields and mounting hardware included
- Made in the U.S.A.