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Bikerumor Monday Mystery Pic

bikerumor monday mystery bicycle part
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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.

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23 Comments
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Jeremiah
Jeremiah
12 years ago

Looks like a seatpost to handlebar stem for a bike with a third wheel.

elwictor
elwictor
12 years ago

Is it a repainted mid-90’s TWP mountainbike stem?

Michael-Vittoria Shoes
12 years ago

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.

upsidedownbiker
upsidedownbiker
12 years ago

Cinelli stem from the late 90’s.

professorVelo
professorVelo
12 years ago

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

Db
Db
12 years ago

Is that forged Magnesium?

Bike Rider
Bike Rider
12 years ago

port side blinker bearing…Where do I pick up my prize?

chris
chris
12 years ago

Old cold forged downhill stem.
Zokes, maybe?

Jerry
12 years ago

Specialized stem.

Justin
Justin
12 years ago

The word’s heaviest bicycle stem

Ghost Rider
12 years ago

I’m with Professor Velo — I know what it’s NOT (not a Cinelli, definitely), but can’t put a finger on what it IS.

bart
bart
12 years ago

I bet the logo is on the other side

Frank
Frank
12 years ago

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.

kyle
kyle
12 years ago

the world’s most phallic stem.

Irv
Irv
12 years ago

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…… ???

matt
12 years ago

Looks dangerous, what ever it is!

Shane
Shane
12 years ago

Definetly Two Wheel Performace (TWP)!!

MG
MG
12 years ago

Its a stem!!! OR a…… stem!

Slush
Slush
12 years ago

Nuke Proof.

Steve
Steve
12 years ago

TRP stem, circa ’98?

Tim Aemmer
Tim Aemmer
12 years ago

IRD

Ben Petersen
Ben Petersen
12 years ago

Looks like a KHS Power Tools stem to me.

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