Yakima Mighty Mounts 39H are sold as a four pack, adapts older mounts to CoreBar and JetStream bar. SideWinder is not compatible with MM39H and CoreBar/JetStream bar applications.
The Rhino-Rack Vortex bars include the VGS rubber strip which has been designed to reduce wind drag and noise as well as providing added protection for your roof racks and load. All bars include end caps.
The STOW iT base bracket is an accessory bracket that offers versatility like no other. Simply fix the brackets to the perimeter channels of a Pioneer platform or Rhino-Rack crossbar, and you have the convenience and flexibility to add, remove or swap accessories with ease to suit your needs. Adaptors sold separately.