aFe MACHForce XP Exhausts Cat-Back Black Tip 09-17 GM Silverado 1500 4.3/5.3L RegCab SB/LB turn14-atp 0L Turbo 4 Cyl

aFe MACHForce XP Exhausts Cat-Back Black Tip 09-17 GM Silverado 1500 4.3/5.3L RegCab SB/LB turn14-atp 0L Turbo 4 CylManufacturer Part # : 49 44072 B Market Description aFe introduces the MACH Force XP exhaust system for the BMW M5 F10 twin turbo. In recent testing this system produced 18 horsepower and 30 lbs. x ft. of torque. This unique exhaust system is constructed from TIG welded, 3 in. mandrel bent 304 stainless steel and uses quad, high flow mufflers. This system was designed and engineered by tuning the perfect tube lengths, ultimately maximizing performance

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