Extreme-C is a special Colnago that was originally created in 2004 as a limited prototype bicycle for Rabobank riders for the mountain TT up l'Alpe DHuez in the Tour De France. Extremely light, yet solid and safe, Extreme-C is the perfect frame for riders who like the challenge of climbing. In 2005 and 2006, Rabobank rider Michael Rasmussen rode his Extreme-C to a stage win and the Maillot Pois of Best Climber at the Tour de France, while in September 2005, Rabobank's Denis Menchov won the Vuelta a Espana riding a Colnago Extreme-C. These two years of severe testing have shown just how strong, versatile and safe the Extreme-C is.

Created for long and hard mountain riding where every gram is important, the weight of the Extreme-C is under 1.000 grams in a medium sloping size, but without compromising any safety and security. Extreme-Cs frame has been re-engineered step by step, using round carbon fiber tubing, the best shape for lightness and to increase stiffness, Colnago created new oversized, more rigid chain stays for the Extreme-C to increase power transmission for long, hard riding. The bottom bracket is in CNC Titanium to facilitate maintenance.

- Frame assembled with carbon tubes and lugs, Made in Italy
- Available in 21 standard sizes and custom sizes
- Front Triangle with tubes in different thickness
- Bottom bracket in titanium CNC machined
- Wishbone B-stay in carbon
- Chain stay with Leaf shape, oval joint (17 mm x 35 mm) in carbon fibre
- Fork: Colnago Star carbon 1"18
- Seat post diameter: 28 mm
- Characteristics: Extremely light frame studied for professional and amateurs climbers, ideal for long distance competitions.