2011-2015 GM 6.6L DURAMAX - 5" DOWNPIPE BACKPart Number: FLO 664NM
2011-2015 GM 6.6L DURAMAX - 5" DOWNPIPE BACK
These exhaust systems are available in a 16 gauge aluminized steel or T409 Stainless. FLO~PRO has made the necessary changes to ensure easy installation as all our exhaust kits come with necessary clamps, preweld contour bent hangers, and stronger flanges. With this exhaust system you can expect increased performance, lower EGTs and improved flow. Allow your truck to breath with this FLO~PRO exhaust system. FLO~PRO, horsepower you can hear!
- 4" Cat Pipe - 5" Exhaust
- Ease of installation
- Contour Bent Hangers
- TorcTite® Clamps
- No Bungs
- Does Not Fit Regular Cab
- 2011-2015 GM 6.6L Duramax
- Some of the 2015 models has a 3-bolt flange instead of a V-band clamp. These kits will only fit models equipped with v-band clamp and will not work for trucks equipped with the 3-bolt flange off the downpipe. Refer to the Exhaust Systems 2015.5-2016 Duramax 6.6L LML section.
*This product requires the use of aftermarket tuning. These parts are for use on non-registered race vehicles on closed-course competition events *Installing or using this part on any emission controlled vehicle ("street" or "off-road") may violate federal and/or state emissions laws and regulations.*