2015 Trek Session 9.9 DH 27.5

Archived: 2015 Trek Session 9.9 DH 27.5 · Mountain Dual Suspension · Published sizes: 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: OCLV Mountain Carbon w/InTension main frame, OCLV stays, Carbon Armor, ABP Convert DH, Full Floater, E2 tapered head tube, integrated frame protection, internal control routing, HexMC carbon EVO Link, Mino Link, MicroTruss, 210mm travel · Fork: Fox Factory Series 40 FIT RC2 w/air spring, Kashima Coat, hi/lo speed compression, rebound, 20mm thru axle, 203mm travel · Suspension

• 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: Fox Factory Series 40 FIT RC2 w/air spring, Kashima Coat, hi/lo speed compression, rebound, 20mm thru axle, 203mm travel · Rear shock: Fox Factory Series DHX RC4, adjustable spring preload, rebound, low-speed compression, 8.75x2.75 (S 400lb; M 450lb; L 450lb; XL 500lb spring), tuned by Trek in California"

• 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.
• Inspect the shock shaft and seals, cycle the rear suspension through its travel and check for oil, air loss, binding or unusual top-out and bottom-out noises.
• Hold the rear brake and load the suspension from several directions. Check pivots, bearings and mounting hardware for knock, looseness or side play.
• Ask for dated fork, shock and pivot-service records. A clean exterior does not establish the condition of internal seals, oil, bushings or bearings.

Archived: Group: DH mix · Shifters: Shimano Saint, 10 speed · Rear derailleur: Shimano Saint, Shadow Plus · Crankset: Shimano Saint, 36T · Rear cogs: Shimano Ultegra 11-25, 10 speed · Chain: Shimano XTR

• 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 Saint hydraulic disc

• Squeeze each lever firmly. It should feel consistent and return cleanly. Check levers, hoses and calipers for fluid, inspect pad thickness and contamination, and examine rotors for wear or bending.
• 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: 27.5 · Rims: DT Swiss FR1950 Gravity Classic; 20mm front hub, 157x12 rear hub · Hubs: DT Swiss FR1950 Gravity Classic; 20mm front hub, 157x12 rear hub · Front tire: Bontrager G4 Team Issue, 27.5x2.35"

• 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: Headset: Cane Creek IS-3, E2, alloy cartridge · Handlebar: Bontrager Rhythm Pro Carbon Riser, 31.8mm, 15mm rise · Stem: Bontrager Rhythm Pro Direct Mount, 31.8mm · Seatpost: Bontrager Rhythm Elite, 2-bolt head, 31.6mm, zero offset · Saddle: Bontrager Evoke 3, hollow titanium rails · Pedals: Wellgo MG-1

• 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.