Custom Sissy Bars for Harley Big Twin Motorcycles. The Big Twin Sissy Bars collection at TC Bros is crafted for riders who want to add functionality, style, and comfort to their Harley-Davidson Big Twin motorcycles. This category includes high-quality sissy bars and mounting kits, designed to fit models like Softails, Dynas, and Touring bikes. Whether you're looking to secure gear, provide passenger support, or achieve that classic chopper aesthetic, TC Bros sissy bars are built for durability, easy installation, and bold custom style. With rugged construction and a range of designs to choose from, our sissy bars deliver the perfect combination of form and function for your Big Twin build.