Ribble 725 hardtail. With the shim it's 30.9 like stated in the specs, without its 33.0mm which is weird. I contacted their customer service and they asked for a photo of the shim wtf.
I was going to suggest it may be for changing out to a wider post for a dropper but 33 is weird.
@PhilDAS started
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Ribble 725 hardtail. With the shim it's 30.9 like stated in the specs, without its 33.0mm which is weird.
I contacted their customer service and they asked for a photo of the shim wtf.