2023 Polygon Siskiu T7E

Archived: 2023 Polygon Siskiu T7E · 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 TRAIL FRAME · Fork: SR SUNTOUR AION 35 BOOST RC-PCS 150mm TRAVEL

• 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: SR SUNTOUR AION 35 BOOST RC-PCS 150mm TRAVEL · Rear shock: SR SUNTOUR TRIAIR2 3CR

• 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 SLX SL-M7100-R 1X12-SPEED TRIGGER · Rear derailleur: SHIMANO SLX RD-M7100-SGS 12-SPEED · Crankset: SHIMANO SM-CRE80-12-B 34T · Bottom bracket: ALLOY FLAT W/ REPLACEABLE PIN · Cassette: SHIMANO DEORE CS-M6100 12-SPEED 10-51T MICRO SPLINE · Chain: KMC E12S 12-SPEED

• 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: SRAM CODE R HYDRAULIC; Levers: SRAM CODE R; Rotors: SHIMANO CL 203mm F:SM-RT64 R:RT-EM600 W/ SPEED SENSOR

• 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: ENTITY XL3 TUBELESS READY · Rims: ALLOY DOUBLE WALL FV H:18mm 622x35 32H FOR TYRE 622-54/76 W/ TUBELESS TAPE · Hubs: F: SHIMANO HB-MT400-B 15x110mm 32H CL / R: SHIMANO FH-MT410-B 12x148mm 32H CL · Front tire: SCHWALBE HANS DAMPF EVO TIRE 29"x2.60" 622x65 SUPER TRAIL, TLE, ADDIX SPEED GRIP · Rear tire: SCHWALBE HANS DAMPF EVO TIRE 29"x2.60" 622x65 SUPER TRAIL, TLE, ADDIX SPEED GRIP

• 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, ZS 44/28.6 | ZS 56/40 · Handlebar: ENTITY EXPERT, W: 780mm, BB: 35mm, R/D: 25mm, B: 9degree · Stem: ENTITY EXPERT, EXT: 35mm, BB: 35mm, R/D: 0mm · Seatpost: TRANZ X JD-YSP23JL 150mm (S, M) / 170mm (L, XL) TRAVEL, DXL: 30.9 x 459mm (S, M) / 499mm (L, XL) · Saddle: ENTITY XTEND, CR-MO ø7mm

• 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.

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.