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Niner AIR 9 & AIR 9 RDO Review

Niner Air 9 and Air 9 RDO are two fast and capable hardtail bikes made by the famous American bike brand – Niner.

They are considered by many to be the perfect mixture between XC and trail bikes, which makes them incredibly versatile at a certain type of riding.

The Air 9 is the more affordable choice, intended for XC and Trail enthusiasts, who do not plan to enter any pro races, but are just looking to spend as much time in nature as possible and have as much fun as possible on rides and in amateur events.

On the other hand, the Niner Air 9 RDO is a race-ready machine with a slightly different geometry than the Air 9. With the right pair of legs on its pedals, it can win any competition that it finds itself in.

Niner bike riding

Patrick Durkin Cummins: A UFC Fighter on a Niner bike

Niner AIR – Aluminum Hardtail

Aluminum Frame $600
Air 2-Star (SRAM NX Eagle) $1,850
Air 3-Star (Shimano SLX, Single-speed) $1,990

Niner AIR RDO – Carbon Fibre Hardtail

Carbon Frame $2,000
2-Star (SRAM SX Eagle) $2,600
3-Star (SRAM GX Eagle / Shimano SLX Singlespeed) $4,100
4-Star (Shimano XT) $5,000
5-Star (Shimano X01) $5,990 – $7,600


AIR – Aluminum


Niner – Air 9 3-Star (NX Eagle)


12-Speed SRAM SX Eagle / 120mm travel / 29×2.4 / 27.5×3.0


Niner – Air 9, 3-Star (SLX, Single-speed)

Head Tube Angle: 68 / Seat Tube Angle: 74 / Chainstay: 430mm


Single-Speed SLX / 120mm Marozchhi Bomber

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RDO – Carbon



Niner – Air 9 RDO

Head Tube Angle: 69 / Seat Tube Angle: 73 / Chainstay: 435mm

niner carbon air 9

12-Speed / 100mm travel / 29×2.35 &

  • Fork: Fox 32 SC Float Factory, 100mm travel
  • Brake Rotors: 180/160mm


Carbon Frame $2,000
2-Star (SRAM SX Eagle) – Fox 32 Float Rythm Grip Evol, Niner alloy 25mm inner width wheels, SRAM Level brakes
3-Star (Shimano Singlespeed) $3,600 – Fox 32 Float Rythm Grip Evol, Niner alloy 25mm inner width wheels, Shimano XT brakes
3-Star (SRAM GX Eagle) $4,100 – Fox 32 Float Factory EVOL FIT 4, DT Swiss X 1900 Spline 25 Wheels, SRAM G2 R brakes
4-Star (Shimano XT) $4,700 – Fox 32 SC Float Factory, DT Swiss XT 1700 Spline 25 Wheels, Shimano XT 2-piston brakes
5-Star (Shimano X01 Eagle) $5,990 – Fox 32 SC Float Factory, DT Swiss XRC 1501 SPLINE 30 Carbon Wheels, SRAM G2 RSC brakes
5-Star (Shimano X01 AXS LTD) $5,990 – $7,600 – Fox 32 SC Float Factory, DT Swiss XRC 1200 Spline 25 Carbon Wheels, SRAM G2 Ultimate brakes

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Sizes & Buying Options

Niner Air Recommended Frame Size Chart

XS – 5’0” – 5’5″
S – 5’3″ – 5’9″
M – 5’8″ – 6’0″
L – 5’11” – 6’3″
XL – 6’3″ – 6’7″




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