JOM’s Dirty 40 Race Bike

For those who don’t know me, I’m a bit of an equipment nut.  I source the parts and assemble most of my bikes myself.  Not a fan of out of the box, pre-assembled bikes.  This ensures I know what’s going into the bike, and have myself to blame when something screws up on the bike.  I also hate riding the same stuff as everybody else; it’s cool to have a unique bike.

I’ve yet to learn how to build my own wheels, because I’m lazy, but in most instances, I am using American Classic wheels, which are virtually handbuilt wheels any.  I eschew proprietary spokes and that sort of rubbish.  I choose reliable equipment, with parts I can easily replace.  I tote along spare parts (or a spare bike) to most races, so no worries there.  Onto the bike…

Colnago C50 Cross as setup for the Dirty 40 UltraCX Race

Sven Nys approved, to ride more than one hour at a time.

Frame: Colnago C50 Cross, 53.5cm on the top tube.  Colnago measurements are strange.  FYI, I scored this frame and fork super cheap.  Insanely cheap actually.  Still pinching myself.
Fork: Colnago all carbon, straight blade.
Headset: Cane Creek 110, USA made.
Seatpost: Campy Record, 27.2mm with USE .8mm shim to work with the frame.
Saddle: Fizik Arione Titanium rail (saddle is well used).
Wheelset: American Classic prototype tubeless rims, Dura-Ace 7700 hubs, 32 spokes front and rear.  Alloy nipples everywhere, barring the drive side.  DT Revolution spokes everywhere, barring the drive side, DT Competitions there.
Tyres: Hutchinson Secteur 28mm, tubeless with spooge inside.
Handlebars: Kestrel Carbon EMS, 40cm, 26.0mm clamp.
Stem: Ritchey WCS, 84 degree, 110mm.
Shifters: Shimano Dura-Ace Di2 with climbing shifter.
Derailleurs: Shimano Dura-Ace Di2 10 speed.
Battery: Shimano Di2 external.
Crankset: Campy Record Compact, 172.5mm, 50/34 rings – YES, I AM RUNNING A SHIMAGNOLO GROUP.  Purists, start cringing.
Bottom Bracket: Campy Record square taper, 102mm, Italian thread. SUPER smooth.
Pedals: Shimano XT.
Cassette: JOM home-made.  Not pictured, my race cassette was a 12-29 consisting of parts from Miche, Cycle Dynamics (Ti) and Shimano.  12-13-15-17-19-21-23-25-27-29, two cogs steps all the way.
Brakes: Avid Shorty Ultimate Cantilevers – love these brakes.  Powerful and highly adjustable.
Bottle Cages: King Cage Titanium – the best, they never drop bottles… just jinxed myself.
Additional Brake Levers: TRP Carbon Cross Top.
Titanium bolts just about everywhere.

Photos, click on the image to view full size.


  1. Kerry Duggan Kerry Duggan

    Nice bike Ken…..I mean Jason.

    • JOM JOM

      Your klunker will be featured here soon K-Dogg…

      • Kerry Duggan Kerry Duggan

        You mean the Panzer?

        • JOM JOM

          I wish we could profile the Panzer, but that has disappeared somewhere into the annals of time. I’m referring to your current, race winning machine.

  2. Avatar Arne

    I’ve been searching everywhere, but can’t find an answer – does the C50 Cross take an Italian or English threaded bottom bracket?

    Also do you happen to know if your C50 Cross has clearance for an 11 speed setup? I know Campagnolo wheels set up for 10 speed can take 11 speed, but not sure if there are any other considerations, such as chainstay shaping that might limit the C50 to 10 speed.

    I’m hoping to find a C50 Cross frame at some point, and have a Campagnolo CX 11 crankset waiting to be used.

    Thank you for any information.

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