bikerumor mystery pic

 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.


  1. Off of a pro flex bicycle the elastomer rear or front shock (originally from Rhode Island bought by K2 in Washington State)

  2. here’s my half-ass comment : whenever in doubt and it looks to sport elastomer and preload just mention GIRVIN in the answer but I have to say it does look like a a mountain Cycle san andreas read shock or CHAiNkey ? either or ….

  3. Its a mountain cycle rear shok , hence the company color way died elastomers .
    Fisher RS1 featured a coil shok
    Girvan dampers were yellow

  4. I’m with Underground and Ernesto, mainly because the Proflex/Girvin/K2 rear shock didn’t have eyelets if I remember correctly…it was fixed to the mono-stay at both ends.

What do you think?