GMC Sierra 2500 HD Performance Exhaust - aFe - Twisted Steel - `11-`14
GMC Sierra 2500 HD Performance Exhaust - aFe - Twisted Steel - `11-`14

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aFe Twisted Steel Performance Exhaust Package for 2011-2014 GMC Sierra 2500 HD 6.6L Duramax (LML). Headers, up-pipes, and down-pipe in 304 stainless built for flow, strength, and an easy bolt-on fit.
Built in Corona, California from heavy-gauge 304 stainless, this system pairs .120 in wall headers and up-pipes with a .065 in wall 3 in down-pipe. Mandrel bends, optimized tube lengths, and mitered collectors support pulse control across the power band, while CNC flanges and included hardware make it a secure, factory-location install.
Features
- 304 stainless construction, brushed finish
- .120 in headers/up-pipes; .065 in down-pipe
- 2 in up-pipes and 3 in down-pipe
- Dual EGT ports: 1/8 NPT and M14x1.5
- 4 in interlock flex sections on up-pipes
- Retains EGR flange; uses factory points
Fitment note: does not fit models built after July 2014 with a 3-bolt flanged down-pipe.
Questions or ready to schedule install? Call Austin at 512-982-9393 or our Los Angeles area shop at 562-981-6800. We provide installation and customization at both locations. Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

