PROFLEXTHESIS - the tale of PROFLEX & K2 (and Girvin & Noleen etc) some history as I know it - maybe...

[KennyDTCC]

I still have (and use) 4 ‘Proflexes’ (a 656, a 757, a 857 and a K2 Proflex 4000). I have also collected lots on Proflex (and later K2 – Proflex) over the years. I had my first Catalogues in 1996, but only in 2021 did I start to write up the history and the story as I understand it (on ‘PROFLEXTHESIS’). It will probably never finish, but (as attached) the current tale at Jan 2023 – as I know it maybe………… others might know better.................

 

[Joe*Pro]

I remember when the K2’s started to take over and came out with what I think were some of the first digital brains on the rear suspension. No idea if they worked any good. Must have been mid 90s.

 

[boy"O"boy]

Nice read. Thanks for writing it up.

Just got myself a Serotta Offroad Proflex as a restoration project so the title grabbed my interest.

Cheers
boy"O"boy

 

[wrecemocny]

Great article, thanks a lot!
Now Do you know anything about Spinergy carbon wheels mounted in proflex 856/956? I've seen some pics (also in your article) and I wonder if that was just an owners idea or there were some extra versions of these models? Can You tell anything about it?

 

[KennyDTCC]

Good Morning G, ​

The Pic's with the 856 & 957 Bikes were modifications made by the owners. You can find / see the range of MTB Spinergy Wheels as below (expensive from California, but very good and improve the looks of the 856 to 957 Proflex bikes.):​

• (760) 496-2121
• info@spinergy.com
• 1709 La Costa Meadows Dr.
  San Marcos, CA 92078

 

[wrecemocny]

Thanks a lot!

 

[KennyDTCC]

and now Part 2 .....

 

[KennyDTCC]

and even more Parts 3A and 3B .....

 

[IceCzar]

Thank you

I have an 857 that was slated for “upgrading” (but was third in line) However last night I acquired a 4000. Was wondering if you knew of any tutorials/hacking of the Smart Shocks? (Testing, electronics repair) I do note rebuild seal kits are available though I’d likely use such an ancient original kit for ordering or making new seals

https://www.herculesus.com/page.php?page=custom-seals
(was with a Hydraulics Engineering firm a few years ago)

 

[KennyDTCC]

IceCzar, I think Noleen Racing (the original K2 Smart Shocks) still make complete and parts (try www.noleenj6.com). I've attached a copy of the Tech parts sheet which might help as well....