MagnaFlow 15-17 GMC Terrain V6 3.6L 409SS Cat-Back Exhaust Quad Split Rear with 3in Polished TipsThe MagnaFlow 2015 2017 GMC Terrain Street Series Cat Back Performance Exhaust System 19114 brings out the personality of your 3. 6L 2015 2017 GMC Terrain with our signature resonant, powerful engine tone and dyno proven performance. Thanks to its fast flowing, mandrel bent 2. 5in. main piping and 1 Straight Through mufflers ending in a Quad Split Rear exit with 3in. Polished Welded On Double Wall Angle Cut Folded Edge tips, this GMC Terrain exhaust