O2 VAM | Factor Bikes

The Factor O2 VAM is a lightweight climbing bike with real aero gains. It shares the Ostro VAM's stiffness and handling geometry, while an external seatpost, ultra-thin top tube and dropped seatstays add compliance at the saddle.

Key features

• 6.4 kg out of the box (size 54, Shimano Dura-Ace Di2)
• Only 5 W behind the Ostro VAM at 0 to 5 degree effective wind angles
• Stack 10 mm higher than the previous version, reach unchanged
• Up to 32 mm tyre clearance
• CeramicSpeed T47A threaded bottom bracket
• External seatpost with boron for strength-to-weight

Wheels

Wheel builds use Black Inc 28|33: 1,198 g per pair, carbon spokes, tubeless clinchers for 28 mm tyres.

Sizes

45, 49, 52, 54, 56, 58, 61