Bikerumor Monday Mystery Pic

bikerumor monday mystery bicycle part

bikerumor monday mystery bicycle part

Photo from the collection of Jeff Archer of First Flight Bicycles. If you think you know what this is, post your answer in the ‘comments’ section– the correct answer will be posted there on Tuesday!

To send in your own Mystery Pic to be considered for the Monday feature, click here and attach your photo with all pertinent information.


23 thoughts on “Bikerumor Monday Mystery Pic

  1. It’s a stem, just not sure since the color is throwing me off. Could be everything from Onza to Allsop/Softride. They used that color. That or AC(Adventure Components). They made a kit back in the 90’s that had a stem, crank, fork pieces, hubs. All the stuff they made and it was color coded for the three different Rock Shox colors at the time. Red, Gold and Yellow.

    I am going with an AC Stem.

  2. definitely 90s, definitely a stem, almost definitely for mountain bikes… I was totally into all the innovations back then but just can’t remember someone doing cutaways from billet over the standard tubular variety ála Ringlé… plus, this doesn’t look like one of the very best in terms of machining…

    ugh… not ringing any bells

  3. The steer clamp looks skinny, like its for a 1″ steer tube. If you flip it over, that would put the bar clamp bolt in a typical position for a road bike stem. So I would guess it was meant for a road bike, for whatever that is worth.

  4. I’d (almost) go with Db and say its a prototype (I think I can see welding by the bar clamp) for a cast magnesium stem by Kirk Precision, although think Kirk predated Aheadsets, so…… ???

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