Factor O2 Miami Blue - 2020, 50 cm

The 2020 Factor O2 Miami Blue is a world-class, ultra-lightweight climbing superbike designed to deliver ruthless acceleration on steep alpine passes and razor-sharp handling on technical descents. Originally retailing for $8,000, this 50cm frame size is perfectly optimized for a nimble driver profile, comfortably fitting riders between 5'0" and 5'6". Draped in a striking Silver and Miami Blue team livery, the legendary O2 chassis features an incredibly advanced carbon fiber layup that trims the bare frame down to a featherlight 740 grams, allowing this complete build to scale in at a breathtaking ~15 lbs.

The electronic infrastructure balances pure competition performance with seamless ergonomics, anchored by a 2x11-speed Shimano Ultegra Di2 drivetrain. This electronic setup supplies instantaneous, crisp gear changes at the touch of a button, driving a versatile climbing package that matches a compact 50/34T chainring configuration to shorter 160mm crank arms—an outstanding upgrade for an aggressive, high-cadence spin on smaller frame geometries. Stopping power is managed by lightweight Shimano Ultegra rim calipers, keeping the bike remarkably minimalist, aerodynamically clean, and easy to maintain.

The rolling stock introduces a premium, pro-tier factory elevation courtesy of a Black Inc Thirty carbon wheelset. These 30mm deep carbon hoops balance structural stiffness with crosswind invisibility, wrapped in top-tier 26c Vittoria Corsa PRO tubeless-ready tires to establish a fast, incredibly supple contact patch with the pavement. The zero-compromise specification is beautifully rounded out with a premium, one-piece integrated Black Inc carbon handlebar and stem cockpit (380mm width / 90mm stem), a matching Black Inc carbon seatpost, and a short-nosed Specialized Power saddle. Arriving in great condition, fully inspected, and certified by a master technician, this ultra-light Factor O2 displays only minor, honest cosmetic surface scratches from routine use with absolutely zero crash history, making it a turn-key dream build ready to scale your next peak.