Passport Seat Clamp with Rack Mount

Hi,

The inner diameter of this clamp can be 31.8mm or 34.9mm depending on which option you select from the dropdown menu. Depending on the size of your seatpost these can either clamp straight to your seatpost or onto your frame in place of your previous seatpost clamp, you will need to match up either your seatpost or your frame to be one of these two sizes so you know it can fit.

Thanks.