Score: 4.8 (votes: 4)
Reviews: 1
No Longer Available.
They are all letter B rear rotors.
Fit R100 & Cosmo 110.
Not exactly sure on the part number for this rotor, i have seen many part numbers for them in the books including: 0820-23-113A, 2329-23-113.
No, they are not rusty, its just some really old cosmoline (rust inhibitor).