- 4" Twin Turbo Down Pipe for LML Duramax - For custom build racing applications to fabricate your own twin turbo kit - Use in conjunction with WCFab Twin Turbo Pedestal (WCF100676) for proper fitment with BorgWarner S400 T6 Turbocharger - High Temp Ceramic Coated - Heat wrap with hose clamps - 5" V-band Clamp for turbo connection included (S400 T6 Exhaust Housing)