Bikerumor Monday Mystery Pic!

bikerumor pic of the day monday mystery pic

We are reviving our Mystery Pic series! If you have any idea what this part is, please let us know in the comments section. This photo was submitted to us by Andy Wiedrich, Warranty Manager at University Bicycles in Boulder, Colorado, “We came across this guy, and have no idea what its for. FYI, A Ritchey Break Away Der hanger fits on this guy pretty darn close.”

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


Todd - 04/14/14 - 8:33am

It’s clearly the drive side, rear dropout from a Specialized full suspension bike.

Sutherland - 04/14/14 - 8:38am

It’s a replaceable drop out, from the drive side of a full suspension bike.

MB - 04/14/14 - 8:40am

Some sort of trailer mount?

Reg Stuart - 04/14/14 - 8:43am

Rear dropout pre assy rt side full suss

Alex C - 04/14/14 - 8:44am

Specialized rear derailer hanger

Christian - 04/14/14 - 9:10am

Yeti WSBB Dropout adapter for a Yakamoto trailer! Yea…. that’s it… yea.

John - 04/14/14 - 9:12am

Looks very much like the drive side drop out off of a 2010-2011 ish Tranisition Double. Transition sold some of the drop out as “bottle openers” for a $1 on their website a while ago.

Steelrider - 04/14/14 - 9:31am

Looks like it would do a good job opening bottles, so I’m gonna say its a bottle opener

Andy - 04/14/14 - 9:33am

It’s clearly a late-90s Campagnolo bar-end derailleur hanger, from an ill-fated attempt to make the world’s first gravel racing bike.

Emanuele - 04/14/14 - 10:12am

It’s a drop out, drive side, but seem to be an insert for a Carbon frame… to be molded in the chainstay and clamped with a bolt on the seatstay.

gringo - 04/14/14 - 10:34am

looks like a generic drive side dropout from the TBG book (Taiwan Bike Guide). Can be ordered and used by frame makers who don’t have the resources to develop their own forged parts.

no it’s not Specialized…look at that pivot location.

ant1 - 04/14/14 - 10:43am

campy suspension seatpost linkage. from their 1917 super roubaix line. maurice garin used these later in his career for all the cobbled classics.

Greg - 04/14/14 - 11:51am

Can opener

Aaron - 04/14/14 - 11:55am

@John nailed it! I have a bunch of them in a box somewhere in the garage.

Gabriel - 04/14/14 - 12:49pm

It looks like a belt´s frame dropout.

topcheese - 04/14/14 - 1:32pm

@greg, no one uses cans anymore 😉

Kind Guy (970) - 04/14/14 - 1:47pm

Shockster bolt on suspension drop out maybe?

j - 04/14/14 - 3:45pm

John FTW. Have a few of those and they suck as bottle openers

Saris Mercanti - 04/14/14 - 4:11pm

@ J,

Yup. John nailed it. To get them to work better as a bottle opener, you have a to grind in a lip to make them work well.

Ryan - 04/14/14 - 4:56pm

Bottle opener from Transition.

I can confirm, it doesn’t work for sh*t.

They didn’t charge me for mine though lol

Sacha - 04/14/14 - 5:39pm

3D printed titanium drop out

maddogeco - 04/16/14 - 2:00am

The trick here is there is no sense of scale. This is a rare prototype Campy saddle. You can clearly see on the left side of the pic how it mounts to a vintage campy seat post.

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