2025 Polygon Collosus DH9

Archived: 2025 Polygon Collosus DH9 · Mountain · 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 DOWNHILL 200mm TRAVEL · Fork: FOX 40 FACTORY SERIES KASHIMA COAT, AIR SPRING, TRAVEL:203mm, GRIP 2, HSC, LSC, HSR, LSR

• 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 40 FACTORY SERIES KASHIMA COAT, AIR SPRING, TRAVEL:203mm, GRIP 2, HSC, LSC, HSR, LSR · Rear shock: FOX FLOAT X2 FACTORY SERIES KASHIMA COAT, E2E: METRIC 250x75mm

• 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: SRAM X01 DH, 1x7-SPEED TRIGGER · Rear derailleur: SRAM X01 DH · Crankset: SRAM DESCENDANT DH, 34T · Bottom bracket: SRAM DUB BSA 83mm · Cassette: SRAM PG720, 11-25T · Chain: KMC X11

• 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 DH-R EVO HYDRAULIC DISC; Levers: TRP DH-R EVO; Rotors: TRP RS01E 203mm, 6BOLT

• 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: DT-SWISS · Rims: F: DT-SWISS FR-541 622MM(29), 32H / R: DT-SWISS FR-541 584MM(27.5), 32H · Hubs: F: DT-SWISS 240 THRU AXLE 20x110mm 32H 6BOLT / R: DT-SWISS 240 THRU AXLE 12x157mm 32H 6BOLT · Front tire: SCHWALBE TACKY CHAN ADDIX SOFT FRONT: 29"x2.4" (622-62) ; REAR: 27.5"x2.4" (584-62) · Rear tire: SCHWALBE TACKY CHAN ADDIX SOFT FRONT: 29"x2.4" (622-62) ; REAR: 27.5"x2.4" (584-62)

• 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. This record indicates different front and rear wheel diameters, so verify each tire at its correct end.
• 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: FSA NO.55/57-1, ZS 56/28.6 | ZS 56/30 · Handlebar: RACEFACE ATLAS 35, W: 820mm, BB: 35mm, R/D: 35mm, B: 8degree · Stem: RACEFACE ATLAS 35 DIRECT MOUNT, EXT: 50mm, BB: 35mm, R/D: 0degree · Seatpost: POLYGON EXPERT, DxL: 34,9 X 320mm · Saddle: LINC XTENT · Pedals: ALLOY 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.
• 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.