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Stolen Polygon Bikes: UK Frame-Number Check (Free)
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Quick answer
Polygon frame numbers are stamped underneath the bottom bracket. On full-suspension models the linkage crowds that area, so check the underside of the down tube and the head tube as well. Polygon ships direct in a box, so read the code off the frame itself rather than a label left on the packaging. Run it through Cyclesite's free lookup for an instant UK check against a stolen-bike registry and rider-filed theft reports.
Where Polygon stamps the frame number
Under the bottom bracket first, then the underside of the down tube, which is where the code usually ends up on the full-suspension Siskiu because the shock and linkage take up the shell. The head tube is the third place to try. Because Polygon arrives boxed and direct, a carton label is often the number a seller quotes; that label is not attached to the bike and proves nothing, so read the frame.
Polygon on the UK used market
Polygon is an Indonesian brand sold in the UK largely online, which puts it in the same position as any direct-to-consumer marque: no dealer receipt exists anywhere in the chain, so the original order confirmation is the proof of ownership to ask for. The Siskiu in particular offers a lot of suspension for the money, which keeps used demand high and makes an under-priced example with no paperwork worth a second look.
FAQs
- Where is the frame number on a Polygon?
- Stamped under the bottom bracket. On full-suspension models check the underside of the down tube and the head tube, because the linkage crowds the shell.
- The seller sent me a number from the box. Is that the serial?
- Do not rely on it. Polygon ships direct in a carton and the box label is not attached to the bike. Ask for a photograph of the code on the frame instead.
- What proof of ownership should a Polygon seller have?
- The original online order confirmation showing the matching frame number. Polygon sells direct in the UK, so there is usually no shop receipt.
Police datapolice.uk releases
Most stolen bikes are never traced back to anyone
Police recorded 28,531 bicycle thefts across 44 UK city centres over three years. A suspect was identified in 10.1% of closed cases, and 1 in 33 reached a charge. Pick an area for the local picture.
Jun 23Down 25% in three yearsMay 26
- 8,221
- thefts recorded in 12 months
- −12%
- change on the year before
- 10.1%
- of closed cases had a suspect identified
data.police.uk · Open Government Licence v3.0