No i wszystko jasne, dostałem odpowiedz od producenta:

"Dear Marcin
 
The SAC-10/Y are recommended for some models of Yamaha R1 and R6 of specific years of production ( R1 98-03  R6 99-04 ), as they were fitted with misaligned forks. In your case it is evident that you don’t need them but only the simple SAC-10. Please contact your local dealer and replace the adapaters with the right ones.
 
Kind regards
 
Alberto DOMINICI
Export Manager
 "
Wychodzi na to że stare yamahy mają niesymetryczne lagi? Ktoś może to potwierdzić?