Installed a backwoods BMP rear bumper on my 21 hardcore and I think the rivits are hitting the track. I buffed the back side ( in the tunnel ) to try and prevent this. I’ll post pictures tomorrow. Anybody else have this problem ?
Had the same thing happen with the new tunnel reinforcement plates that go inside the tunnel from Cat. A rivet on each side above the top idler would just touch the track if it shifted over slightly as it does when you ride. Just trimmed it down some.