2011-2015 GMC 4 “Cat Back Single System (no muffler) 2500/3500, LML, Race Exhaust FLO 861
GMC 4 “Cat Back Single System
Flo Pro 861 GMC 4 “Cat Back Single System is for a 2011-2015 6.6L Duramax. This system is made from aluminized steel. No Muffler Kit
Founded in 1981, FLO PRO Performance Exhaust has been manufacturing and distributing only the most durable quality muffler and exhaust systems for your vehicle. FLO PRO has proven it beats the competition with a louvered pipe that accelerates the exhaust flow through our mufflers. FLO~PRO performance mufflers are designed to boost the horsepower generated from your street vehicle. We also specialize in Diesel Performance carrying full systems for virtually every diesel truck.