2009 Torker DX Seatpost Clamp Size?

Off-topic
1

So I’m selling my '09 torker DX to a buddy. It’s one of the red and black ones. I stripped some of the threads a while ago on the seatclamp so I’d like to replace it. Torker’s site was no help (no specs available) Does anyone know which size I need?
The available sizes on UDC are 27.2mm, 25.4mm, 22.2mm…
Anyone know which one i need? Is this measurement the diameter or the circumference of the piping? Thanks.

2

25.4

3

UDC sells seat clamps according to seatpost size. You need one for a 25.4mm seatpost.

4

Thanks for the help guys!