CR system?
The QCR or Quick Change Runner system, is one of the better innovations to have come along in recent years. Very simply, the QCR is two aluminum pieces that are screwed into the runner bases where you can slide runner plastic on and off. This eliminates the need for gluing or bolting and unbolting sled runners when you need to change them — many sprint mushers now put on new runner plastic before each race to give them an extra edge. QCR plastic is available in a number of sizes and densities and the system fits both basket and toboggan sleds.
