aFe Power MACH Force Xp 3 IN 304 Stainless Steel Cat Back Exhaust AFE MACH Force Xp 3 IN to 2 1 2 IN Stainless Steel Cat Back Exhaust aFe 49 38059 Mach Force XP 304 SS Cat Back Exhaust System with aFe 49 38078 B Mach Force XP 304 SS Cat Back Exhaust System with. Now your 2019 Ram 5. 7 HEMI can perform and sound as good as it looks with this MACH Force Xp cat back exhaust system from aFe. In house dyno testing produced gains of up to +22 horsepower and +26 lbs. x ft. torque for towing, track, and street performance. 3 mandrel bent, 409 stainless steel tubing and high flow muffler improve performance across the power band and delivers a deep, aggressive exhaust tone. Factory style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions for a secure fit. 100% MIG welded for strength, durability, and long lasting good looks. This system is finished with dual, 5 black stainless steel tips with aFe Power logo badging for a unique, custom appearance. No cutting or modifications required. Quality hardware and clamps are included for a hassle free installation. Features: In house dyno testing produced gains of up to +22 HP and +26 lbs. x ft. torque 3 mandrel bent 409 stainless steel tubing for improved performance 100% MIG welded for strength and durability High flow 409 stainless steel muffler reduces backpressure and provides a deep, tuned sound Dual rear exit 5" black stainless steel tips with aFe Power logo for a custom appearance Quality hardware and clamps for a hassle free install Note: Will only fit models equipped with factory dual exhaust system.