Hardtail

An aluminum hardtail with the DNA of a trail bike. If a cross-country race bike met a rugged trail bike in the woods, their love child might look a lot like our AIR 9 aluminum hardtail. This bike blends the agility and efficiency of a pedal-friendly XC bike with the versatility, toughness and capability of a rowdy trail rig.

An aluminum hardtail with the DNA of a trail bike. If a cross-country race bike met a rugged trail bike in the woods, their love child might look a lot like our AIR 9 aluminum hardtail. This bike blends the agility and efficiency of a pedal-friendly XC bike with the versatility, toughness and capability of a rowdy trail rig. Now available as a stock, factory built singlespeed.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack.

NINER AIR 9 2-STAR BIKE LIGHTER AND BRIGHTER If you're looking for the lightest mountain bike possible, you'll want to get a hardtail. Hardtails feature suspension on the front making them excellent climbers and fast on the flats. The Niner Air 9 2-Star Bike is an aluminum hardtail with the DNA of a trail bike. It is great for cruising the trails, shredding the singletrack, and getting riders to the podium. It has a hydroformed and welded 6061 aluminum frame that has "trail country" geometry and is single-speed compatible. The frame features integrated frame protection and tire clearance for up to 29 x 2.4" or 27.5 x 3.0" tires. The 2-Star version of the Niner Air 9 comes with a SRAM SX Eagle 12-speed drivetrain. This includes a cassette that has a hill-crushing 11-50T gear range that makes climbing and pedaling through rough terrain much easier. SRAM Level hydraulic disc brakes provide excellent stopping power so you can descend with confidence. With the Niner Alloy wheels and Schwalbe tires, you'll be able to set everything up tubeless for a smoother ride, better traction, and fewer flats. FEATURES Hydroformed aluminum frame with "trail country" geometry, single-speed compatibility, and wide tire clearance SRAM SX Eagle drivetrain provides reliable shifting performance SRAM Level hydraulic disc brakes offer confidence-inspiring stopping power Tubeless-ready rims and tires for a smoother ride, better traction, and fewer flats Marzocchi Bomber Z2 Rail suspension provides 120mm of smooth suspension SPECIFICATIONS FRAME Hydroformed 6061 Aluminum FORK Marzocchi Bomber Z2 Rail, 120mm Travel REAR SHOCK Nothing HEADSET Niner Integrated IS42/IS52 SHIFTERS SRAM SX Eagle FRONT DERAILLEUR - REAR DERAILLEUR SRAM SX Eagle CRANKSET SRAM X1 1K Eagle DUB, 32T BOTTOM BRACKET SRAM DUB PF30 CHAIN SRAM SX Eagle CASSETTE SRAM PG-1210, 11-50T BRAKES SRAM Level WHEELSET Niner Alloy 30mm, Boost Hubs TIRES Schwalbe Nobby Nic EVO Super Trail, 29x2.6" / 2.35" HANDLEBAR Race Face Aeffect R 780mm Wide, 20mm Rise STEM Race Face Aeffect R, 40mm GRIPS/BAR TAPE Niner Grrrips L/O Nylon Soft Compound SEATPOST Niner Alloy Seat Post, 370mm SEATCLAMP Single-Bolt SADDLE Niner Custom w/ CrMo Rails INTENDED USE XC, Trail

The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.