The aFe MACH Force-Xp 2-1/2in cat-back exhaust (part 49-46125-P) is a single side-exit system for the 5.6L V8 Nissan Titan. The manufacturer builds it from mandrel-bent 409 stainless steel tubing and says the mandrel bending supports maximum flow. A dual-in, single-out free-flowing muffler and a polished stainless tip replace the factory exhaust, and the manufacturer says the smooth transition bends reduce turbulence for better throttle response. Compared with a cheaper aluminized cat-back, 409 stainless resists corrosion better over years of road salt and heat cycling, which matters on a truck you plan to keep for a long time. Search terms this system matches include 2017 Nissan Titan 5.6L V8 cat-back exhaust, 409 stainless mandrel bent exhaust, and polished tip Titan exhaust.
The manufacturer describes OE-style bayonet hangers that hold pipe position under high vibration and heat, and a flange and band-clamp joint meant to seal without leak paths. The kit is described as including the muffler, tubing, hangers, band clamps and the hardware needed for installation. Fitment is the variable to verify. The product name lists the Titan XD for 2016–2017, but other listings cover 2017–2021 and the non-XD H61 Titan, and owners on user forums report that aFe's 49-46125 variants and the 49-46135 part use different hangers across 2016–2021 model years. Confirm the exact year, cab, and bed with the manufacturer and check your VIN before ordering.
Not confirmed for every model year. The fitment callouts vary, so the manufacturer should verify the exact model, year, cab, and bed by VIN before purchase.
The manufacturer says the system comes with the muffler, tubing, OE-style bayonet hangers, band clamps, and the hardware needed for installation.
The manufacturer says the system uses the factory mounting locations, which makes it a bolt-on install rather than a cut-and-weld job. Support the vehicle safely on jack stands, and leave clamps loose until the full system is hung and aligned. Owners on user forums report that the bayonet hangers can seat stiffly into rubber mounts, and that clearance can differ between sides on some installs, so check tip and muffler position before final tightening. Re-check clamps and hanger seating after the first few hundred miles.
