Good news, I can help you find the correct custom fit roof rack for your 2015 Mitsubishi Outlander Sport.
The correct Rhino Rack for your 2015 Mitsubishi Outlander Sport is # RR59MR. The # RR59GR you referenced is the custom fit for the Mazda CX-5 only. They do appear the same in the images and do look identical in the tower and crossbar but they differ in the custom fit kit and the crossbar length.
The # RR59MR, will come with the fixed mounting point fit kit, so no, you will not need... view full answer...
Thank you for the information!
For an all-in-one system we have the SeaSucker Surfboard Carrier # 298-BX1806. This uses powerful vacuum cups (rated for 210 lbs pull strength per cup) to secure to your roof and it comes with pads and tie-downs to easily secure your paddle board. The nice thing about this system is you can take it off and store it in the back of your 2015 Mitsubishi Outlander Sport when you aren't using it.
If you'd rather have a more traditional roof rack that remains... view full answer...
Hey Will, check out the install video I attached on this page. It shows the Curt hitch part # C13079 installed on a similar 2020 Outlander Sport to your 2021 model. This hitch is actually the exact same as the etrailer hitch # e63AR so the install process would be exact same. view full answer...