Niner

AIR 9 Mountain Bike Frame

Whether it's for that cross-country event this coming summer or a 'do-it-all' hardtail mountain trail bike for the entire year we're building up our dream alloy rig with the Niner Air 9 Mountain Bike Frame. Niner uses strong aluminum materials and a modern frame design to give the ideal platform to design a strong, robust, and economical option to build a bike. The Air Nine is outfitted with boost rear axle spacing and a practical PF30 bottom bracket to ensure any crank type fits.

Niner designed the Air Nine to be a practical cross-country bike with plenty of trail capability. With spec suggesting anywhere from a 100mm to 130mm fork installed we can excitedly take this bike wherever the dirt leads us. Room in the rear for up to a 29in x 2.4in tire also goes with mentioning, so we can take our rig on some of the roughest trails our friends usually only ride full-suspension bikes on. With a 120mm fork on the bike, the Air Nine is equipped with a 68-degree head-tube angle and impressive rollover when outfitted with 29in tires.