O-ring Ø28mm for muffler inlet YASUNI R1, R2, SPR 3, HMR 2 ...

Here is the Ø28mm o-ring of pot that mounts to the entry of muffler YASUNI on models HMR 2, SPR 3, R1 and R2 motorcycle 50cc. It allows the seal between the muffler inlet and the swivel / tube. Attention, do not mount on the R3 because it has a diameter of 32mm! Sold individually.