MBRP 4" INSTALLER SERIES FILTER-BACK EXHAUST SYSTEM (POLISHED) 50” diameter polished aluminum CAC

50” diameter polished aluminum CAC pipe

this heavy-duty centerlink outperforms anything available from the factory on non-Hummer GM HD trucks

flowing 680 CFM and 87% more air than stock

STREET LEGAL IN ALL US STATES-YES

6L L5P Duramax 2020 GMC 6

MBRP 4" INSTALLER SERIES FILTER-BACK EXHAUST SYSTEM (POLISHED) 50” diameter polished aluminum CACMBRP 4" INSTALLER SERIES FILTER BACK EXHAUST SYSTEM S6059AL 2020 2021 GM 6. 6L DURAMAX L5P (ALL CREW & EXT. CAB) The MBRP 4" Installer Series Filter Back Exhaust System S6059AL can reduce backpressure and lower EGTs in your 2020 2021 GM 6. 6L Duramax L5P. This exhaust features 4" heavy duty aluminized steel piping and fully sealed seams will increase the life of this exhaust system. Mandrel bent tubing means this exhaust system will retain a true 4