2015 Trek 7.1 FX Stagger

Archived: 2015 Trek 7.1 FX Stagger · Urban/Commuter · Published sizes: 15, 17.5, 20"

• 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: FX Alpha Silver Aluminum, DuoTrap S compatible, rack and fender mounts · Fork: High-tensile steel w/lowrider mounts, CLIX dropouts · High tensile Steel

• 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: Commuter mix · Shifters: Shimano Altus EF51, 7 speed · Front derailleur: Shimano Tourney · Rear derailleur: Shimano Acera M360 · Crankset: Forged alloy, 48/38/28 w/chainguard · Rear cogs: SunRace Freewheel 14-34, 7 speed · Chain: KMC Z51

• 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: Tektro alloy linear-pull brakes, Shimano Altus levers

• Inspect pads, cables and housings, then examine both rim braking surfaces for concavity, cracking or heavy wear. Confirm each caliper returns and centers correctly.
• 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 AT-750 32-hole double-walled alloy · Hubs: Formula FM21 alloy, Formula FM31 alloy · Front tire: Bontrager H2, 700x35c

• 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: VP, semi-cartridge bearings, sealed · Handlebar: Bontrager Riser, steel, 30mm rise · Stem: Bontrager Approved, 25.4mm, 10 degree · Seatpost: Bontrager SSR, 27.2mm, 12mm offset · Saddle: Bontrager SSR · Pedals: Wellgo nylon platform

• 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.