125-200cc m/c kit opnions

well i guess its time to rebuild the rear m/c on Stinkys 12 cr isn't there an orange part for that? my local dealer sells all that stuff that S.P. builds now Betas Triumphs and Yamahas to [the place is huge] but he,s useless on red huskies we do need to get all those brembo/ whoever p/n in one place and see what interchanges somebody help me plezz