The Yakima bike racks are good and sturdy. But like with any plastics that flex and bend, some parts are bound to brake. Straps are no exception.

You can find replacement straps made of the same material as the original. What we propose here are straps made from a different material. One that is more flexible. This is particulary useful when securing your bike in cold weather. The straps remains pliable.
By a pair of straps from the Etsy store.
Installation
The installation is quite simple. Remove the old one by pushing the grooved tongue flush to the strap. Install the new one by pulling it through the slot of the old one.