Vibrant Performance Flat Black Universal Mufflers are perfect for cruising under the radar and avoiding unwanted attention. Vibrant “True Straight Through” internals feature a Stainless Steel perforated tube that is wrapped in 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”H x 9”W x 15”L (20” Overall Length, including the exhaust tips).