The Air 9 Carbon is now a dedicated geared racing bike with trickle-down RDO features throughout, including reduced diameters and trimmed tube profiles, smaller junctions, molded carbon headset races and a carbon BB shell. Additionally, the rear brake mount is now tucked inside the curving stays to distribute twisting forces evenly, permitting smaller caliper mounts
The benefits of a tapered headtube aren’t just for riders of long travel bikes. XC racers and riders also see significant advantages, which is why we incorporate the technology in all our new frames. By using tapered steerer suspension forks, we create the stiffest front end possible – leading to increased steering precision as you carve a corner and descend toward the finish line. The integrated headset used in the Air 9 Carbon is light and simple. Installation, cleaning and maintenance take seconds rather than minutes, a boon to anyone who queues up at the starting line without a team mechanic.
PF30 BOTTOM BRACKET
There are several BB standards to choose from – for our dedicated geared only race bikes we like PF30. It’s compatible with any BB30 crankset (as well as standard threaded BB systems, with an adapter) and the bearing cups are delightfully easy to install. The oversized 30mm spindle is light and resists the torque of even the mighti¬est Ninerds. Oversized bearings spin longer and smoother between overhauls. The plastic cups of the PF30 BB system don’t require a machined aluminum bottom bracket shell insert, allowing a minimalist carbon construction.
INTERNAL SHIFTER ROUTING
Headbadge routing is designed for full-length housing, simplifies cable changes and protects cables from the elements.
NINER HARDTAIL GEOMETRY
As verified over and over again in independent reviews, Niner has hardtail 29er geometry dialed. Climbing or descending, the geometry of the Air 9 Carbon is tuned to for great handling and rider positioning. The Air 9 Carbon is intended for 80-100mm forks, allowing you to fine tune your ride.