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First introduced in 1996 and continually improved over the past two decades, the iO RIO has won more Olympic track medals than any other wheel in the world.

The latest generation iO delivers an even greater competitive advantage. It features a wider rim to better integrate the slightly larger tubular tires that are popular with track racers. And each of the five spokes has a NACA profile for further improved aerodynamic drag. The new iO is ready to break its own records.

Main features

Unbeatable aero performance shaves seconds off your time.

New wider elliptical rim shape.
5 aircraft wing spokes for lower wind resistance.

Engineered stiffness for sharp steering and maximum power transfer.

Wider rim for maximum stiffness.
Monobloc construction.
Woven 3K carbon fiber.

Roll faster with greater efficiency.

Tubular rims and interchangeable QRM cartridge bearings minimize friction.


  • Weight Front : 750 g
  • Material: 3K carbon fibers
  • ETRTO size: 28
  • Tire: tubular
  • Body material: aluminium
  • Axle material: steel
  • Axle size: front 9x100
  • Bearing technology: QRM automatic setting - cartridge
  • User guide
  • Wheel cover
  • Valve extender not mounted on wheel
  • M6 support washer + screw CHC M6
  • ASTM category 1 : road only
  • Maximum weight supported by the wheels: must not exceed 120 kg (bike weight included)

User guides and documents

General User GuideDownload PDF

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