For 2012 the Colnago Twenty IX is the mountain bike riders best bet. Colnago has used Hydroformed 6000 series alloy tubing,some new technology with the headset using a hybrid bearing system, a Shimano bottom bracket that is press fit, and they have the Rock Shox Reba RL front fork make this 29er smooth as butter and quick.
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| Size | Size | Sc° | Seat angle |
| Pccs | Seat tube length (centre to centre) | Scs | Seat cluster offset |
| Ps | Seat tube length (centre to top) | C | Chainstay length |
| P | Effective seat tube length | A | Front centre |
| Os | Top tube length | Hs | Tube length |
| O | Top tube length (horizontal) |
| Size | Ps | O | Sc° | A | C | Hs |
|---|---|---|---|---|---|---|
| 15″ | 394 | 570 | 73.30° | 630 | 440 | 110 |
| 17″ | 440 | 590 | 73° | 644 | 440 | 110 |
| 18″ | 483 | 610 | 73° | 653 | 440 | 125 |
| 20″ | 533 | 630 | 73° | 673 | 440 | 140 |
