2023 Polygon Collosus N8XE

Archived: 2023 Polygon Collosus N8XE · Electric-assist · 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: ALX AM/ENDURO 160mm TRAVEL · Fork: FOX 38 FLOAT FACTORY

• 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.

Archived: Fork: FOX 38 FLOAT FACTORY · Rear shock: FOX FLOAT X2 FACTORY

• 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: Shifters: SHIMANO XT Di2 SW-M8150, 1x12-SPEED I-SPEC EV · Rear derailleur: SHIMANO XT Di2 RD-M8150 · Crankset: SHIMANO SM-CRE80-12-B 34T · Cassette: SHIMANO XT CS-M8100 10-51T MICROSPLINE · Chain: KMC E12 FOR 12-SPEED

• Confirm every shift battery charges and every control operates. Shift through the full cassette under light load while checking pairing, derailleur alignment and response at both ends of the range.
• 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 M8120 HYDRAULIC DISC; Levers: SHIMANO XT BL-M8100; Rotors: F: SHIMANO RT-MT800 203 CL / R: SHIMANO RT-EM810 203 CL

• 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: XL2 TUBELESS READY · Rims: ALLOY DOUBLE WALL FV H:18mm 622x36 32H FOR TYRE 622-54/76 W/ TUBELESS TAPE · Hubs: F: SHIMANO TC500 15x110mm 32H CL / R: SHIMANO TC500 12x148mm 32H CL FOR MICROSPLINE · Front tire: SCHWALBE MAGIC MARY EVO 29"x2.60" 622x65 SUPER GRAVITY TLE ADDIX SOFT · Rear tire: SCHWALBE MAGIC MARY EVO 29"x2.60" 622x65 SUPER GRAVITY TLE ADDIX SOFT

• 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: FSA NO.57E W/ SEALED BEARING · Handlebar: RACE FACE AFFECT R 35, W: 780mm, BB: 35mm, R/D: 20mm, B: 8degree · Stem: RACE FACE AFFECT R 35, EXT:40mm, BB: 35mm, R/D: 0mm · Seatpost: FOX TRANSFER FACTORY SERIES 150mm (S, M) / 175mm (L, XL) TRAVEL, DxL: 30.9x418mm (S, M) / 475mm (L, XL) · Saddle: XTEND · Pedals: ALLOY FLAT W/ REPLACEABLE PIN

• 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.
• Cycle the dropper post repeatedly. It should reach full travel, remain extended under load and have no unusual oil, excessive rotational play or damaged remote, cable, hose or battery.

Archived: Motor: SHIMANO DU-EP801 MID MOTOR 25kph / 20mph · Battery: SHIMANO BT-EN806 FOR DOWN TUBE INTEGRATED - 630Wh (36V, 14Ah)

• Inspect the battery case, mount, lock and electrical contacts for cracks, impact, corrosion, swelling, overheating marks or looseness. Confirm the battery charges normally.
• Confirm the correct charger, battery keys and removable system parts are included. Check charger cables and connectors for damage or improvised repairs.
• Power the system on from cold, check the display for warnings, and test every assist mode. Assistance should engage and stop predictably without intermittent cutouts or abnormal motor noise.
• Ask for available battery-health, cycle-count, diagnostic and firmware records. Confirm that replacement batteries and system support remain available before agreeing on value.

• 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.