Seat Post Binder Bolt

[dirttorpedo]

I've got an old 80's ritchey frame that's missing a seat post binder bolt/quick release. I tried some of the ones from my parts bin, but they are either to thick in diameter or too short. BITD, were there different binder bolt lengths? It seems that 50 mm is the current standard. I've seen 60mm ones on eBay.

Anyone have any advice/guideance. I don't want to spend a mint and I don't want to piss around buying something and not have it work.

 

[Ferghus]

Seat QR seat binder bolt is 57.15 mm for that Ultra.

 

[dirttorpedo]

Re:

Thanks - I was thinking I needed 60mm, so that confirms it.