Thule Stay-Put Ripple Strap Keep that Thule rack in tip-top shape with this replacement Stay-Put Ripple Strap. Replaces ripple strap on Thule top-tube mounted racks Stretch action secures your bike to the rack. Thule part number: 8523006001 | Thule Stay-Put Ripple Strap Black, Thule Part 8523006001