2015 Trek 720 Disc

Archived: 2015 Trek 720 Disc · Touring · Published sizes: 49, 52, 54, 56, 58, 61cm

• 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: 100 Series Alpha Aluminum, DuoTrap S compatible, rack and fender mounts, internal cable routing, inboard disc mounts · Fork: Trek touring carbon disc · Carbon Fiber

• Look for dents or shape changes and inspect the edges of welds around the head tube, bottom bracket, seat cluster and suspension mounts for hairline cracks.
• 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.
• Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

Archived: Group: Touring mix · Shifters: Shimano 105, 11 speed · Front derailleur: Shimano 105, 5800 series · Rear derailleur: Shimano 105, 5800 series · Crankset: RS500 · Rear cogs: Shimano 105, 11-32, 11 speed · Chain: Shimano 105

• 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: TRP HY/RD cable/hydro disc brake, 160mm

• Check both cables and housings for corrosion, fraying or drag. Confirm each caliper releases cleanly, then inspect pad thickness, rotor wear and rotor alignment.
• 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: 700c · Rims: Bontrager Approved Tubeless Ready disc · Hubs: Bontrager alloy centerlock disc, Bontrager alloy centerlock disc · Front tire: Bontrager AW1 Hard-Case Lite, 700x28c

• 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.
• Confirm whether the bike is actually set up tubeless, whether both tires hold pressure, and when sealant and rim tape were last serviced.

Archived: Headset: Threaded, semi-cartridge bearings, sealed · Handlebar: Bontrager Race Lite IsoZone, VR-CF, 31.8mm · Stem: Bontrager Elite Blendr, w/computer & light mounts, 31.8mm, 7 degree · Seatpost: Bontrager Alloy, 2-bolt head, 27.2mm, 8mm offset · Saddle: Bontrager Paradigm 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.
• 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.