2025 Giant STP 26

Archived: 2025 Giant STP 26 · Mountain · Published sizes: regular, L

• 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: ALUXX-grade aluminum, horizontal dropouts, integrated chain tensioner · Fork: Giant CREST 34 Boost RCL, 15x110mm, 100mm

• 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.
• 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: MicroSHIFT Advent X SL-M9605 · Rear derailleur: MicroSHIFT Advent X RD-M6205 · Crankset: Prowheel Charm, 30t, 155mm (regular) Prowheel Charm, 30t, 155mm (large) · Bottom bracket: threaded · Cassette: MicroSHIFT Advent X CS-H104, 11x48 · 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: Tektro HD-M275, hydraulic [F]180mm, [R]160mm rotors

• 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: Rims: Giant 26", alloy, 28mm inner width · Hubs: Giant Disc, 28h, 100x15 thru-axle, alloy, disc · Front tire: Maxxis Ikon, 26x2.2" · Rear tire: Maxxis Ikon, 26x2.2"

• 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: Handlebar: Giant Sport, alloy, 31.8mm · Stem: forged alloy, 0-degree · Seatpost: alloy, two-bolt, 30.9x300mm (regular) alloy, two-bolt, 30.9x350mm (large) · Saddle: Giant Sport · Pedals: platform

• 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.