Unfortunately, in our imperfect world, things made out of plastic have a pesky tendency of breaking. And while RockyMounts products are notorious for breaking this rule, the factory wheel ratchet straps included on most rooftop bike racks tend to wear. Swap out that beater strap, and lock the bike back down with the RockyMounts SL Ratchet Strap. The RockyMounts SL Ratchet Strap will work on all RockyMounts bike trays except for wider Lariat SLX / Noose SLX trays, which require the RockyMounts SLX Ratchet Strap. If you owned the older Velcro Strap, the RockyMounts SL Ratchet Strap will work with your existing bike tray. This strap will also work with Thule Racks and Yakima Racks bike trays.