New high strength machined aluminum lower windshield arm set for all 2005-2013 R1200RT, all K1200LT, all K1200/1300GT (from 2006) and all K1600 bikes. Replace those easily breakable cheap pot metal OEM BMW lower windshield arms with this high quality machined aluminum set. Just pop off the stock pressed on arms and install these. Install these along with our upper arm set and put that barn door shield on your bike with confidence! BMW does not offer these as replacement parts and gets $320 for a complete base carrier assembly, save big here!