2026 Polygon Cascade 3

Archived: Frame: ALX XC SPORT FRAME · Fork: SUNTOUR XCE 28 100mm 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.

Archived: Fork: SUNTOUR XCE 28 100mm TRAVEL

• 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.
• Ask for dated fork-service records. A clean exterior does not establish the condition of internal seals, oil or bushings.

Archived: Shifters: SHIMANO ALTUS SL-M315, 1x8-SPEED TRIGGER · Rear derailleur: SHIMANO ESSA RD-U2000 · Crankset: PROWHEEL C10Y, 36T · Bottom bracket: SQUARE BB, 68mm · Cassette: SHIMANO CS-HG400, 11-45T · Chain: KMC Z-8.3

• 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: HYDRAULIC DISC BRAKE; Levers: HYDRAULIC DISC BRAKE; Rotors: 6-BOLTS 160mm

• 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.

Archived: Wheels: ALLOY DOUBLE WALL · Rims: ALLOY DOUBLE WALL · Hubs: F: ALLOY, 100mm 32H QR / R: ALLOY, 135mm 32H QR · Front tire: 27.5" / 29"x2.25" · Rear tire: 27.5" / 29"x2.25"

• 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.

Archived: Headset: ZERO STACK W/ SEALED BEARING, ZS 44/28.6 | ZS 44/30 · Handlebar: POLYGON SPORT W: 700MM, B: 31.8MM, R/D: 20MM · Stem: POLYGON SPORT E: 40MM, B: 31.8MM, R/D: 7 · Seatpost: ALLOY SEATPOST 27.2x350mm · Saddle: BLACK STEEL ø7mm · Pedals: ONE PIECE PP BODY

• 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.