2015 Niner Air 9 RDO 4-Star X01/RS-1

Archived: 2015 Niner Air 9 RDO 4-Star X01/RS-1 · Mountain Hardtail · Published sizes: XS, S, M, L, XL

• Confirm the frame markings and seller description match this archived model. Note every component that differs from the published build.
• Record the frame serial number. It should be legible, unaltered and consistent with the seller’s ownership history.
• Find the size marking on the bicycle and confirm the fit before judging the condition or price.

Archived: Frame: RDO carbon · Fork: RockShox RS-1 Solo Air 100mm, 15MM Predictive Steering

• Inspect the frame in bright light, especially the head tube, bottom-bracket area, chainstays and clamped surfaces. Look for cracks, ripples, crushed sections or signs of impact.
• Stand behind and in front of the bicycle to look for obvious frame, fork or wheel misalignment. Ask directly about crashes, transport damage and repairs.

Archived: Fork: RockShox RS-1 Solo Air 100mm, 15MM Predictive Steering

• Inspect the fork stanchions for scratches or coating wear, look for oil or dirt rings at the seals, and cycle the fork through its travel while checking for binding or bushing play.
• Ask for dated fork-service records. A clean exterior does not establish the condition of internal seals, oil or bushings.

Archived: Group: SRAM X01 · Shifters: SRAM XO1 11sp · Rear derailleur: SRAM XO1 11sp · Crankset: SRAM X1 PF30 32T · Bottom bracket: PF30 · Rear cogs: SRAM XG 1195 11sp 10-42T · Chain: SRAM PC 1170

• Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
• Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
• Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Archived: Brakes: Shimano XT M785 ICE Tech Pads with 180/160MM Rotors

• Inspect pads and braking surfaces, check the complete cable or hose path, and confirm both controls feel consistent and return cleanly.
• Before riding, test every installed brake separately at walking speed. Each should stop firmly and release cleanly without its control reaching the end of its usable travel.

Archived: Wheel size: 29 · Rims: ZTR ARCH EX · Hubs: 15MM PS FRONT SRAM XO, 142 x 12MM REAR SRAM XO · Front tire: Schwalbe Rapid Rob EVO TL 2.40/Racing Ralph EVO TL 2.25, Niner Graphic

• Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
• Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.
• Remove and reinstall or closely inspect both wheel-retention systems. Axles or quick releases should tighten correctly with undamaged threads, hardware and dropouts.

Archived: Handlebar: NINER Flat Top Carbon, 710MM, Red Niner Graphic · Stem: NINER Alloy Stem, Red Niner Graphic · Seatpost: NINER Carbon Seat Post, 400MM, Red Niner Graphic · Saddle: Niner Custom with Cr-Mo Rails, Niner Graphic

• Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure. Look particularly closely for crushing, scoring or cracks at carbon handlebar clamp areas.
• Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

• Before riding, confirm both wheels are secure, tires are safe, both brakes function, and the headset, handlebar, stem, cranks and pedals have no looseness.
• Begin at low speed. Test steering, braking and shifting progressively, then load the drivetrain and suspension only after the basic safety checks pass.
• Listen and feel for repeated knocks, grinding, skipping, brake pulsation or movement at joints. Stop the test if the bicycle cannot be controlled safely.