Kooks 3-1/2" NASCAR Whelen Modified spec muffler — class-legal for Whelen Modified Tour racing. Polished stainless quad-core directional design balances NASCAR-mandated sound levels with minimal flow restriction. Quad-core design produces less back-pressure than conventional muffler internals at race-level flow rates.
Fits 3-1/2" pipe applications. NASCAR Whelen Modified spec-legal.
Kooks Headers & Exhaust has been hand-building stainless headers and exhaust systems in Statesville, North Carolina since 1962. Every muffler is welded by experienced fabricators in the same shop where the company's NASCAR racing legacy was built. Polished stainless steel construction handles race-level heat cycling.
8" long body, 16" overall length. 5" OD body. 3-1/2" ID inlet, 3-1/2" OD outlet. Quad-core directional muffler design.
