This item is designed to fit all of the R and K series models. It will help protect the rear offside of the bike, particularly the shaft housing and differential in the event of a tumble or the bike falling over. As you can see from the photographs, each protector comes complete with a bobbin and all necessary fittings in stainless steel. It is mounted in place of the black plastic cover fitted by BMW. As well as providing protection, this really will improve the look of your bike and is in keeping with the overall quality of BMW's.  It is easily fitted in a couple of minutes and full instructions are supplied.