@Dakin - if your still looking for a -17º stem in 25.4 look for a ritchey 2 bolt stem. Matt black anodised classic MTB stem. Think clamp is actually 26 but mine seems to hold any bar just fine.
Possibly just Ritchey 2-Bolt MTB stem -17º. maybe search on the bay and several will pop up.
I'd offer you the one I have but I keep finding a use for it!
@Dakin - if your still looking for a -17º stem in 25.4 look for a ritchey 2 bolt stem. Matt black anodised classic MTB stem. Think clamp is actually 26 but mine seems to hold any bar just fine.