2015 Specialized Fatboy

Archived: 2015 Specialized Fatboy · Fat Bike · 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: Specialized M4 Premium Aluminum, fully butted w/ smooth welds, tapered headtube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger · Fork: Specialized FACT carbon, full monocoque, tapered steerer, 135mm hub spacing · Carbon Fiber

• 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: Group: Mountian mix · Shifters: SRAM S-Series, Grip Shift, 10-speed · Front derailleur: SRAM X7, 2x10, low direct mount · Rear derailleur: SRAM X7 Type 2, 10-speed, medium cage · Crankset: Custom Samox, 2x10, alloy, 100mm CNC spindle, w/ BB, 104/64mm BCD spider · Bottom bracket: Samox, PF30 · Rear cogs: Sunrace, 10-speed, 11-36 · Chain: KMC X10L, 10-speed, reusable Missing Link

• 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 Gemini, hydraulic disc, resin pads

• 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: Wheel size: 26 · Rims: Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h · Hubs: Specialized MTB Hi Lo disc, alloy, sealed cartridge bearings, 135mm wide, QR, 32h · Front tire: Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6", Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6"

• 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: Headset: 1-1/8" upper, 1-1/2" lower, Campy style, integrated sealed cartridge bearings, split crown race, 3.8mm cone spacer · Handlebar: Specialized, low rise, double butted 6061 alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 31.8mm · Stem: Specialized, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware · Seatpost: Alloy, 2-bolt, 12.5mm offset, 30.9mm, anti-corrosion hardware · Saddle: Body Geometry mountain, steel rails, 143mm · Pedals: Resin test ride, w/ toe clips, CEN std.

• 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.