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Whispbar WB400 J-Cradle Kayak Carriers

The Whispbar WB400 J-Cradle Kayak Carrier hides a kayak carrier (full-featured) with load assistance in a sleek, aerodynamic package. Its beautiful J-style design and the slide-out loading arms make loading simple and maximizes your crossbar space availability. When not in use, the WB400 collapses into a low profile stowed position. You won’t need to worry about noise or hitting your garage door-frame. This fits Yakima round bars and Thule square bars or Aeroblades, and obviously Whispbars

Availability: Out of stock

Sorry, this item is out of stock or no longer available. Please contact the shop if you have any further questions.



  • Advanced aerodynamic design 
  • Easy install and removal by using QuickDock technology 
  • Mounts fast and easy to Whispbar Crossbars, Thule AeroBlade crossbars and other aerodynamic crossbars with T-slot using patented QuickDock technology
  • Mounts fast and easy to Yakima Roundbars and Thule Square bars with included alternative mounting hardware
  • Easy loading made by slide-out loading arms
  • Comes with locks and key to keep kayak carrier secured to crossbars
  • Added bow/stern tie-downs with ratcheting pulley and tie-down straps hold your boat in place
  • Vertical positioning of kayak allows for more valuable crossbar space, so you can bring more fun gear


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