Just installed the bakflip MX4. Part number 26427 for the 2017 long bed. Installed easy enough. Took about an 1.5 hrs by myself. The instructions said to take the factory accessories rail off and mount the mounting brackets in the existing holes, then slide the tonneau cover side rails onto the mounting brackets... but it's easier to slide the mounting brackets into the rail then mount the brackets with the rail at the same time. Would have saved me about 30 min if I would have known that. Love the tonneau cover. No drilling required unless you want to drill a bigger hole for the drain hoses.
Just installed the bakflip MX4. Part number 26427 for the 2017 long bed. Installed easy enough. Took about an 1.5 hrs by myself. The instructions said to take the factory accessories rail off and mount the mounting brackets in the existing holes, then slide the tonneau cover side rails onto the mounting brackets... but it's easier to slide the mounting brackets into the rail then mount the brackets with the rail at the same time. Would have saved me about 30 min if I would have known that. Love the tonneau cover. No drilling required unless you want to drill a bigger hole for the drain hoses.