Some folks are just not satisfied with the usual. They have to always be pushing the limits; refining and adjusting; until they have the truck that has no limits. MBRP have put together some components that will take you to the next level. The fastest path from the turbo to the tip is through an MBRP down pipe. Bulking up exhaust flow.
4in. Down Pipe; T409 Stainless Steel
Pipe Assembly, 4", Down.