Flowmaster 50 Series HD Mufflers

Heavy-Duty For Extreme Conditions

Flowmaster's 50 Series HD Mufflers are designed with 4-inch internal components and a large case size to help significantly increase mileage, torque, and horsepower while greatly improving towing power and acceleration. The 50 Series heavy-duty is great for gas, diesel, and late-model trucks used in the most extreme working conditions. Constructed of 16-gauge steel and are fully MIG-welded for maximum durability.