2020 Specialized Sirrus Single-Speed

Archived: 2020 Specialized Sirrus Single-Speed · Hybrid · Published sizes: S, M, L, XL, XXL

• 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: Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing · Fork: Steel, V-brake, 1-1/8" steerer, QR, rack/fender mounts · Steel

• 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: Crankset: 3-piece square-taper, forged alloy; chainrings: 42T · Bottom bracket: BSA, square-taper, 68mm · Cassette: SunRace, freewheel, 17t · Chain: CHAIN, KMC,Z1.WIDE.NPNP.VN,NP/NP,SINGLE SPEED,1/2"x1/8",W/O MISSING LINK

• Check chain tension and chainline, rotate the drivetrain through a full revolution and confirm the rear axle or tensioning hardware cannot slip.
• 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: (F) V-brake, linear pull / (R) V-brake, linear pull

• Inspect pads, cables and housings, then examine both rim braking surfaces for concavity, cracking or heavy wear. Confirm each caliper returns and centers correctly.
• 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: 700C rim brake, double-wall alloy, 22mm depth, 21mm internal width, 32h · Hubs: (F) Loose ball bearings, 9x100mm spacing, 32h / (R) Fixed gear, loose ball bearings, 10x120mm spacing, 32h · Front tire: Espoir Sport, 60 TPI, wire bead, double BlackBelt protection, 700x30mm · Rear tire: Espoir Sport, 60 TPI, wire bead, double BlackBelt protection, 700x30mm

• 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: Double-butted alloy, 5-degree backsweep, 25.4mm · Stem: 10-degree rise, 25.4mm clamp · Seatpost: Alloy, 12mm offset, 2-bolt clamp, 27.2mm · Saddle: Specialized Canopy Sport, steel rails, 155mm · Pedals: Specialized Dirt

• 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.