2015 Borealis Yampa Frame and Fork

Archived: 2015 Borealis Yampa Frame and Fork · 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: Internal Cable routing, Standard rear rack mounts for cargo racks, drainage system · Fork: Borealis FF1 · Carbon Fiber

• Inspect the frame in bright light, especially the head tube, bottom-bracket area, chainstays and clamped surfaces. Look for cracks, ripples, crushed sections or signs of impact.
• 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.

• Identify the installed brake type and actuation before choosing replacement parts or service procedures. Inspect every installed pad and braking surface, then check the complete cable, hose or linkage path for damage, corrosion, leaks or binding.
• 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: Hubs: 197mm Rear Spacing · Front tire: Clearance for 4.8” tires on 100mm rims

• 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.

• Apply the front brake and rock the bicycle to check the headset for play or notchiness. Inspect the handlebar, stem and clamp areas, then confirm every control is secure.
• Confirm the seatpost can be adjusted and that the saddle, pedals and their mounting hardware have no cracks, severe corrosion, looseness or damaged threads.

• Measure chain wear when applicable and inspect the chainring and rear sprockets for hooked, damaged or heavily worn teeth.
• Operate every available gear under light load. Hesitation, skipping or inconsistent engagement can reflect wear, damage, poor adjustment or mismatched parts.
• Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect the crank arms, chainring hardware and pedal threads for damage or looseness.

• 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.