I still need to do this. One of the best upgrades that can be done but I'm slacking.
Above the middle seam*You’ll need to make one cut right about the middle seam in the front of the seat then cut out the foam. Trace the back of the seat from the inside then drill a marker hole from the front out the back. Then take a cut off wheel and connect the dots. From there it’s trim to fit.
Where does the top belts mount?We have 4 point harness kits available for the rmax uses yxz lower mounts from dragonfire includes pass throughs and ovverride plug Yamaha RMAX Harness kit 4 Point | Dragonfire Racing (rad.parts)