Bikerumor Monday Mystery Pic

first flight bicycles mystery pic on bikerumor

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.


Daniel - 02/06/12 - 7:03am

Downtube ferrules/cable stops.

Alex - 02/06/12 - 7:04am

Shifter bosses, Campagnolo MTB group (Centaur, it was called, I think?).

Ross - 02/06/12 - 7:15am

allow down tube shifters to be fitted to handle bars?

Evan - 02/06/12 - 7:19am

Agree with Daniel, but even more specifically, they are Shimano 105SC, circa 1992.

Azmin - 02/06/12 - 7:35am

Barrel adjuster adapters for old frames that used to have the flick gearing at the downtube.

By the way where can I buy them, been looking for it to restore an old frame.

Richard - 02/06/12 - 8:22am

Those look to me like the bottom part of a Shimano thumbsifter. The bracket part. The 4 sets of 3 side by side holes allows for changing the angle/position of the actual shifter which is not included in the picture.

Andy - 02/06/12 - 8:52am

They are mounts for thumbshifters, I think Campagnolo as Alex said. They are not DT cable stops.

Hasnain Kara - 02/06/12 - 9:11am

Screw on downtube shifter mounts

King County - 02/06/12 - 9:51am

I agree with Richard. They are early Shimano adaptors that work with the old rapidfire stuff. Those holes give the clue.

Urs - 02/06/12 - 10:54am

Thumbshifter mounts for end 80ies Shimano Exage System. Those Shifters were directly bolted onto the brake lever without a separate clamp.

Db - 02/06/12 - 11:06am

Can’t be for the DT. The holes don’t appear to be big enough for the stud. They look more like some sort of thumb shifter mount for the bar. Just not sure which one.

mike - 02/06/12 - 1:38pm

park thumbshifter adapters to fit shimano M900 brake levers.

WTF - 02/06/12 - 2:13pm

IPC design

WTF - 02/06/12 - 2:20pm

And they mount m730 XT or DX series shifters on TOP of m730/732 brake levers. Eliminating the need for a separate mount.

Supposedly making it a more ergonomic position. Since they were discontinued, they probably weren’t too ergonomic : )

Alex - 02/06/12 - 5:29pm

Mounts from thumb shifters for late 80’s era MTB’s

Tyler (Editor) - 02/07/12 - 3:30pm

They’re IPC C-1 converters for mounting XT thumbshifters to an XT or DX Rapidfire clamp. The bracket was introduced just as Shimano converted from over-the-bar thumb shifters to under-the-bar rapid fire triggers and helped retro grouches keep the thumb shifting while taking advantage of the newer Servo Wave brake levers.

More info here:

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