Fixed Gear
The Iride track bicycle frame and fork build kit.

Columbus Niobium tubing
best in the world

Track Bike frame and fork only. Made from Columbus SL Niobium tubing, hand brazed into investment cast lugs. The top of the line material from Italy’s best tubing manufacturer, SL Niobium is a special micro alloyed chromoly steel blend, employing the latest chemical technology in its refined metallurgy. Niobium steel alloys are also required in rocket and jet engines, and in superconducting equipment like MRI machines. It is the strongest most durable steel possible, meaning that less needs to be used to make the strongest lightest steel bicycle frame possible. This frame weighs 1.59 kilograms (3.50 lbs) for the 47cm size.


Fortified Undercarriage Beauty
Form and Function

Build your dream bike.

With the balanced geometry, powder coat finish, italian threaded bottom bracket, 1" head tube, and nondrilled rear brake bridge, you will build a classic yet serious ride.

Read more about Columbus Niobium steel frame material from the Columbus website:

Just add your choice of cranks with the normal Italian threaded bottom bracket bearing set, normal 27.2mm seatpost, saddle, chain, handlebars, pedals, 700c wheels with 120mm normal width fixed gear rear hub; and put on a front brake for best results.

See the track frame geometry table here.

  • Track Bicycle frame and fork kit.
  • Made from Columbus SL Niobium tubing.
  • Steel tubes hand brazed into investment cast lugs.
  • Italian threaded bottom bracket shell.
  • 1" head tube.
  • Non drilled brake bridge.
  • No mounts or braze-ons.

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