These bobbins are specially and have been designed to fit on
Honda/Suzuki.
The have been made from aluminium.
Including:-
CBR600RR (03-05)
CBR954 (02-03)
RC51 (03-05)
CBR1000RR (04-05)
Suzuki GSXR's (00-05)
SV650/S (99-05)
SV1000/S (03-05)
TL1000R/S (97-02)
...and many more, including all machines with 8mm threated swingarm bosses.
Makes bike much more stable & steady when on the paddock stand