Flo Pro 2015.5-2016 Duramax 2500/3500 6.6L, 5″ Downpipe Back Single w/ Muffler (aluminized), 4″ Race Pipe, w/ OEM Flange EC-CC/SB-LB-Dually – FLO 671
6.6L 5″ Downpipe Back Single with Muffler
2011-2015 Duramax 2500/3500 6.6L 5″ Downpipe Back Single LML 4″ Race Pipe with OEM flange
* IMPORTANT NOTE: These kits will only fit models equipped with the OEM style 3-bolt flange off the turbo direct pipe! If you do not have a 3-bolt flange, please see our 2011-2015 Duramax Exhaust Kits.
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.