Fits: 2011-2015 GM 6.6L Duramax w/ V-band flange at Downpipe
The FLO-664NM is a 5" Downpipe-Back Exhaust System by FLO-PRO for the 2015.5-2016 6.6L Duramax. It's the perfect kit if you're looking to remove your stock components and replace it with high-performance & high-flow 5" piping from the Downpipe back! You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!
- 5" Downpipe Back Race Exhaust
- No Muffler Included - Straight Pipe
- Increased Torque & Fuel Mileage
- Aluminized Steel & Stainless Steel Options
- Single Side Exit
Part Number: FLO 664NM