Need some help. Would anyone be able to tell me if a 2017R1M swingarm will fit on my 2021 Standard R1. I have read both where it does fit and doesn't fit. One person told me the only difference is it is shorter than the 21 swingarm. If anyone can provide me any information on it. Would like to put a brushed aluminum swingarm on my 21 R1. Any help is appreciated.