Buy good, plastic sliders. Don't buy metal or CF, they transfer too much of the crash force to the frame and can actually bend/dent the frame. There are lots of companies that make them... try Lockhart Phillips, they make a nice slider.
ps - do a search under "frame sliders," there have been a lot of conversations on SBW about this (and every other) topic.
Last edited by slaintedan; 04-03-2005 at 10:17 AM.