# Where is the frame number on a Squish bike?

Canonical: https://www.cyclesite.co.uk/trust/frame-numbers/squish
Last reviewed: 2026-08-14

**Quick answer:** The frame number on a Squish bike is usually stamped underneath the bottom bracket. Because kids frames are small, also check the underside of the down tube if the shell looks empty.

On a Squish, check underneath the bottom bracket first. Squish makes lightweight children’s bikes sold by wheel size, and the frames are small, so there is little flat metal to stamp. If the shell is blank, check the underside of the down tube and the rear dropouts.

## Start under the bottom bracket.

This is the most common place to find a Squish frame number. It is the part of the frame between the pedals, on the underside.

1. Put the bike somewhere safe and well lit.
2. Turn it upside down carefully, or place it in a workstand.
3. Look underneath the frame where the cranks meet the bike.
4. Wipe away mud, grease or road dirt.
5. Use a phone torch if the number is hard to read.
6. Take a clear photo before typing the number into a checker.

### If it is not under the bottom bracket

- Near the rear dropouts, where the back wheel fits into the frame.
- Around the seat tube.
- On the underside of the down tube.
- Near the head tube at the front of the bike.
- On the original sales receipt.
- In your Squish registration email or paperwork.
- With the Squish dealer that sold the bike.

## What a Squish frame number looks like

A unique alphanumeric code stamped into the frame. The wheel size in the model name, such as 20 or 24, is not the frame number.

### Not the frame number

- Squish 14
- Squish 20
- Squish 24
- Wheel size markings
- Frame size
- Safety standard numbers

## Kids bikes change hands often

Lightweight children’s bikes are outgrown quickly and resold repeatedly, so a used one may have had several owners in a few years. That is normal. Record the frame number when you buy, keep it with the receipt, and pass it on when you sell, because it is the only thing that identifies the bike after the stickers wear off.

## Buying a used Squish

A clean-looking bike is not always a safe buy. Before you pay, ask the seller for a clear photo of the frame number and check it against stolen-bike records. You should also ask for:

- The original receipt or proof of purchase.
- The seller’s name matching the receipt where possible.
- Clear photos of the bike from both sides.
- A photo of the frame number.
- Any service history.
- Details of upgrades or replacement parts.

## Bottom line

The quickest place to find a Squish frame number is underneath the bike, near the pedals. Look for a stamped code or barcode sticker, copy the full number, then check it before you buy, sell or register the bike. A used Squish can be a brilliant buy, but the frame number is the detail that protects you.

## Frequently asked questions

### Is a Squish frame number the same as a serial number?

Yes. Most people use frame number and serial number to mean the same thing. It is the unique identifying code attached to the bike frame.

### Do all Squish bikes have a frame number?

Most Squish bikes have a frame number or serial number. Check the locations described above first; on older frames the marking can be shallow or worn, so clean the area and check in good light before concluding it is missing.

### What if the Squish frame number has been removed?

Do not buy the bike. A removed or damaged frame number is a major red flag. It may make the bike harder to register, insure, resell or prove as yours.

### Can I check if a Squish bike is stolen by the frame number?

Yes. Use the frame number to run a stolen-bike check before buying. You should also ask the seller for proof of ownership and check that the details match the bike.

### How do I register a Squish bike in the UK?

Find the frame number using the locations described above, then record it against your Squish. It is free, and you need an account so we know where to send the alert. If that exact number is ever reported stolen to us, we email you. If anyone then lists a bike carrying it, the listing is hidden until the seller proves it is theirs.

## Related pages

- Free stolen-bike check: https://www.cyclesite.co.uk/stolen-bikes
- What a used Squish is worth: https://www.cyclesite.co.uk/value/squish
- Used Squish prices by model: https://www.cyclesite.co.uk/value/squish
- Frame numbers for other brands: https://www.cyclesite.co.uk/trust/frame-numbers

Source: Cyclesite editorial, reviewed 2026-08-14. HTML version: https://www.cyclesite.co.uk/trust/frame-numbers/squish