Groomer08 said:the tunnel protectors are there to protect the tunnel in a worst case scenario. track balloning, track breakage, etc.
If you doubt what the man said, go look under your own sled. The top axle is solid mounted to the tunnel, and your shocks actually pivot off that point. the track MAY ballon under suspension compression too i think.
but technically, the whole skid will never move up there and hit.