Yakima Timberline Towers The Yakima Timberline Towers integrate with factory racks with raised side rails to expand your carrying capacity and deliver maximum rooftop versatility. It easily attaches and features a sleek design. Yakima Timberline Towers Features The totally new Yakima tower for vehicles with raised side rails. Advanced tower architecture is sleek, strong and quiet Works with Jet Stream, Core Bar and Round Bar crossbars Strong, durable stainless steel strap to accommodates a range of rails Maximum load rating of 165lbs (75kg), depending on vehicle and bar rating Easily locks to you vehicle with our SKS system (sold separately) Round Bar SL Adapter required to use Yakima's classic Round Bar with Stream Line System Towers (sold separately) Streamline crossbars are compatible with any Stream Line Tower Stream Line Tower | Yakima | Timberline Towers 2-Pack