False , the nextech rails are tough, I stabbed my track on my Pro-RMK, twisted the whole skid , broke some of my titanium components, but rails were straight after I got the pressure of the track twisting them.I tried carbon fiber trailing arms back in the day on an Edge sled. I snapped a LOT of them to the point they started sending me reinforced versions that then started damaging the mounting points. I would be concerned about the strength of CF rails. CF doesn't bend, it breaks. I would be very concerned given my past experience.