Yakima Big Stack

Add a pair of Yakima BigStack Boat Rack posts to your rooftop rack and you can carry up to 4 kayaks on their side on most vehicles.   Features  Single-post design has integrated padding and folds flat when not in use  AnchorHead™ tie-down system provides 2 options for securing boats: Outer hooks can be used for "lasso loading" or straps can be run through the center of the AnchorHead  Fits round bars, square bars (sold separately) and most factory-installed racks  Includes set of heavy-duty straps and bow and stern tie downs  BigStack locks to crossbar with SKS lock core system (sold separately)