For long-distance cycling or commuting with luggage, pannier racks are an essential. They are lightweight metal frames which allow the use of panniers to transport your gear. Most pannier racks are compatible with a large range of road and touring bikes as well as hardtail MTBs. Make sure the rack is also compatible with your pannier bag. When purchasing a new pannier rack, check that the rack is compatible with disc brakes. You should also check that your frame has rack eyelets; if not, you will need to choose a pannier rack with an alternative mounting. Each pannier rack has a maximum weight.