Review on 🚲 GUB PLUS11 Aluminum Alloy Bicycle & Motorcycle Phone Mount with 360° Rotation - Adjustable Holder for iPhone X XR Xs 7s 8 Plus, Samsung S7/S6/Note5/4 - GPS Mount for 4 to 6.8 Inch Devices by Mike Starling

I installed this holder on my GT Aggressor Pro and it worked. I love that it doesn't move at all and my phone stays secure. There are a few things to give it 5 stars. 1) Installation requires the use of a screwdriver or the tool provided. the holder is installed, you can't adjust it easily 3) i don't want the holder to scratch my paintwork, so i used the plastic protector that came with it, but it makes the installation 2x more difficult. 4) I think if they screw with the phone it will be better. Other than that it's a good product and I love that you can rotate it horizontally, but I prefer vertical. Make sure you find the right angle before doing the final installation.