Experience unparalleled rooftop cargo versatility with the Yakima 55-Inch Lightweight Heavy-Duty Aluminum Hd Crossbars.Expertly crafted from high-grade aluminum, these crossbars offer a perfect blend of strength and lightness, effortlessly supporting heavy loads, including rooftop tents, without compromising performance. Integrated tie-down points on the endcaps make securing your gear quick and reliable, ensuring peace of mind throughout your journey.Designed for adaptability, these crossbars feature T-slots on both the top and bottom, enabling seamless integration with various Yakima gear mounts. The top T-slot is equipped with rubber infill to protect your cargo while reducing wind noise, delivering a quieter ride.Compatible with all StreamLine towers when paired with the Hd Bar Sl Adapter (sold separately), these crossbars are versatile and easy to customize for your unique hauling needs.