The AI Biker

BIKE AND KIT

Buying a used mountain bike

Inspect identity, structure, wear and ownership before paying for a second-hand bike.

Reviewed · General UK planning guidance · Check current operator and manufacturer information

Confirm identity

Start with provenance rather than components.

  • Ask for the frame number, original receipt and seller identification before meeting.
  • Check theft registers and be cautious of removed numbers or an implausibly low price.
  • Use a traceable payment method and retain a written sale record.

Inspect carefully

Cleanliness can hide as much as mud.

  • Look for cracks, dents, paint disturbance and play around the frame, fork and pivots.
  • Test both brakes, every gear, wheels, bearings, dropper and suspension.
  • For carbon or e-bikes, consider a specialist inspection and diagnostic report.

Price the repairs

Wear items can transform the apparent bargain.

  • Cost tyres, drivetrain, brake pads, rotors, bearings and suspension service.
  • Check proprietary parts remain available.
  • Do not ride technical terrain until the bike has passed a safety check.

Useful official guidance

Rules, conditions and services change. Use these sources and the relevant venue’s current information before relying on a plan.

BikeRegister bike checkingPolice bicycle security advice

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