2025 Polygon Zeta Velo

Archived: 2025 Polygon Zeta Velo · City/Commuter · Published sizes: One Size

• 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: AL6 MINIVELO FRAME · Fork: ALLOY RIGID FORK · Aluminum

• Inspect the complete frame for cracks, dents, distortion, heavy abrasion, suspicious paint differences or evidence of a previous repair.
• 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: Shifters: SHIMANO TIAGRA SL-4700, 1x10-SPEED RAPIDFIRE · Rear derailleur: SHIMANO TIAGRA RD-4700 DIRECT ATTACH · Crankset: PROWHEEL OUNCE 48T · Bottom bracket: BSA THREADED FOR 2-PIECE CRANKSET · Cassette: SHIMANO TIAGRA CS-HG500 11-34T · Chain: KMC X10

• 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: CLARKS M2 HYDRAULIC DISC BRAKE; Levers: CLARKS M2; Rotors: CLARKS M2 160MM 6-BOLTS

• 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: Wheels: ALLOY DOUBLE WALL 32H · Rims: F: 20'' ALLOY DOUBLE WALL H:21mm W: 17.9mm 406 32H / R: 20'' ALLOY DOUBLE WALL H:21mm W: 17.9mm 406 32H · Hubs: F: ALLOY QRx100mm 32H 6-BOLTS / R: ALLOY QRx135mm 32H 6-BOLTS · Front tire: VEE SPEEDSTER 20"x2.0" · Rear tire: VEE SPEEDSTER 20"x2.0"

• 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: SEMI INTEGRATED THREADLESS, ZS 44/28.6 | ZS 44/30 · Handlebar: POLYGON SPORT, W: 640mm, BB: 31.8mm, R/D: 0mm, B: 6degree · Stem: POLYGON SPORT, EXT: 45mm, BB: 31.8mm, R/D: 3 degree · Seatpost: POLYGON SPORT, DxL: 30.9 x 400mm · Saddle: SELLE ROYAL · Pedals: PP PEDALS W/ REFLECTOR

• 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.