The Thule Compass Kayak and SUP Carrier w/ Tie-Downs - J-Style, Post Style, or Saddle - 2 Kayaks or SUPs # TH890000 comes with both racks (one for each crossbar) to stabilize your kayaks as well as tie downs for 2 kayaks. I've attached a video of the system for you to show everything that comes in the kit and how to install it. view full answer...