Dieselr Aluminized SCR Urea Race Pipe | Dodge 6.7L Cummins Cab & Chassis 2011-2012The Dieselr Aluminized SCR Urea Race Pipe (20112012 6. 7L Cummins) is purpose built for Ram 3500, 4500, and 5500 Cab & Chassis trucks that need dependable exhaust flow and long term durability. Constructed from heavy gauge aluminized steel, this race pipe is engineered to handle high heat, heavy loads, and real world working conditions. By replacing the restrictive factory urea section, the Dieselr SCR Race Pipe improves exhaust flow, reduces