Vibrant Performance Flat Black Universal Mufflers are perfect for cruising under the radar and avoiding unwanted attention. Our “True Straight Through” internals feature a Stainless Steel perforated tube that is wrapped in our premium quality, multi-layer sound suppression materials that help produce a low, deep tone while still allowing for unrestricted flow and maximum horsepower. All Flat Black Mufflers measure 5 in.H x 9 in.W x 15 in.L (20 in. Overall Length, including the exhaust tips).