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The aFe MACH Force-Xp 3.5in 304 stainless steel cat-back for 2015–2018 BMW X5 M (F85) and X6 M (F86) V8 4.4L provides improved flow and a custom exhaust tone while yielding measurable gains on a dyno. Constructed from mandrel-bent 304 stainless with TIG welds and a transverse high-flow muffler, it resists corrosion and installs with factory-like fitment. Polished tips and powder-coated muffler finish complete the look.
aFe MACH Force-Xp 3.5in 304 SS Cat-Back w/Polished Tips 15-18 BMW X5 M (F85)/X6 M (F86) V8-4.4L S63
