Can you sell a mountain bike that does not work?
Yes. Repairers, people replacing one component and buyers who want a project all shop deliberately at this end. None of them will accept a fault they discover after paying.
What actually goes wrong with mountain bikes
These are the faults that move a mountain bike down the grades, and the first things a buyer will ask about:
- Blown or leaking suspension needing a rebuild
- Worn drivetrains requiring chain, cassette and rings
- Cracks around the head tube and bottom bracket
- Coil-sprung budget forks
Grading it honestly
Fair covers something heavily used, or with a described fault or missing part: around £45 to £270. For Parts covers something not working or incomplete, sold as seen: roughly £25 to £150. Grades are seller-declared and nobody inspects them for you, so grading up does not raise what you get — it produces a buyer who arrives expecting something else. All five grades explained.
Working out what you actually have
Establish the fault properly rather than guessing at it:
- Compress the fork and check for oil leaks or knocking
- Note the exact fork model and drivetrain tier
- Inspect the frame welds carefully for cracks
Photographing the fault
Photograph the damage directly and in focus — it is the evidence that the rest of the description is honest:
- The whole bike side on, drive side, in daylight
- The fork stanchions close up, showing whether they are clean and unpitted
- The drivetrain and rear derailleur, model readable
- The frame at the pivots or welds, plus tyres and brake rotors
What to state in the listing
Alongside the fault itself, buyers of broken mountain bikes want these confirmed:
- Frame size and the rider height it suits
- Wheel size, and hardtail or full suspension
- Fork and shock model, travel, and whether they have been serviced
- Groupset, brake type, and tyre and drivetrain condition
Size, wheel size and suspension type: “Trek Marlin 7, Large, 29er Hardtail”. Wheel size — 26, 27.5 or 29 inch — is a genuine filter and often left out. Say whether it is hardtail or full suspension in the title, since they are different bikes for different buyers.
What buyers will ask
Answer these in the listing rather than waiting to be asked:
Cycle it and look for oil on the stanchions. Fork servicing is a known cost and buyers accept it when told, but a blown fork discovered on collection ends the sale.
Be straight about it. A well-maintained bike ridden a lot is worth more than a neglected bike ridden little, and buyers can usually tell anyway.
Give a height range as well as the frame size. Mountain bike sizing varies more between brands than road sizing does.
Is it worth repairing first?
Usually not, unless it is cheap and you can evidence it. What lifts the price is condition and completeness, which a repair rarely restores:
- Air suspension forks recently serviced
- Higher-tier drivetrains and hydraulic brakes
- Straight frames with no cracks at the welds
- Dropper post fitted and working
If the work would cost more than the gap between £150 and what a sound one fetches, sell it as is broken and let the buyer decide.
When to list it
Seasonal but less sharply than road bikes, since many ride year round. Spring is strongest, with a secondary lift in autumn. Full suspension bikes hold value better than hardtails.
Getting it to the buyer
Collection is normal and lets the buyer ride it. If posting, expect to remove the wheels, bars and pedals and use a proper bike box.
WishThrift does not process payments, arrange delivery or hold funds. Confirm the money has cleared before the item leaves your hands, and keep the conversation on the site so there is a record of what was agreed.
Ready to list it? Free to list, no commission, and neither side pays a buyer-protection fee — create a free account, or read the full mountain bike selling guide if yours turns out to be sound.
Frequently asked questions
Is a broken mountain bike worth anything?
Yes — typically £25 to £150 at For Parts against £100 to £600 working. Repairers and people harvesting one component buy deliberately at this end. Blown or leaking suspension needing a rebuild
Should I repair it before selling?
Usually not, unless the repair is cheap and you can evidence it. The things that genuinely lift the price are air suspension forks recently serviced and a repair rarely restores those.
What do buyers ask about a faulty mountain bike?
The fault itself, in detail. Cycle it and look for oil on the stanchions. Fork servicing is a known cost and buyers accept it when told, but a blown fork discovered on collection ends the sale. The listing that answers it before being asked is the one that sells.
See also: what mountain bike is worth by condition · how to sell mountain bike · condition grades explained · all broken & damaged guides · all selling guides.