The MACH Force XP exhaust system for the 09-14 Dodge Challenger R/T V8-5.7L produced 11 horsepower and 15 lbs. x ft. of torque. This exhaust system is constructed from 3.0 mandrel bent stainless steel and is MIG-welded. The system uses dual high flow mufflers with 3.0 tubing which improves performance across the power band while maintaining the true muscle car sound. aFe has incorporated a crossover balance tube to equalize and evenly distribute exhaust pulses traveling through the exhaust system. This not only creates a more efficient flow and better performance, the crossover balance tube also reduces sound decibels minimizing exhaust drone. Included in this system are two dual 3.5" polished stainless steel exhaust tips. This exhaust uses all factory hanger locations for a hassle free installation. No modifications necessary.