Yakima 8003539 MightyMount 39H Adapter

The 8003539 39H MightyMount adapters are made to attach your round or square bar mountable gear to the new CoreBar and JetStream crossbars. If you are a long time Yakima user upgrading your vehicle with a new StreamLine Base Rack System, these adapters will allow you to continue using your favorite mounts. They are sold as a set of four.