# Where is the frame number on a Carrera bike? Canonical: https://www.cyclesite.co.uk/trust/frame-numbers/carrera Last reviewed: 2026-06-11 **Quick answer:** The frame number on a Carrera bike is usually underneath the bottom bracket, between the pedals. Look for a unique mix of letters and numbers on the frame itself. If you bought the bike new from Halfords, check the PDI form as well. Most Carrera bike frame numbers are found underneath the bike, between the pedals. That area is called the bottom bracket, where the crank arms run through the frame. Turn the bike carefully upside down and look under the frame for a unique code made up of letters and numbers. It may be stamped into the metal frame or printed on a label, depending on the model and year. If you bought the Carrera from Halfords, the frame number may also be shown on the PDI form supplied with the bike. ## Start under the bottom bracket. This is the most common place to find a Carrera 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 - Rear dropout, where the back wheel slots into the frame. - Seat tube, especially near the bottom bracket. - Head tube, near the front fork. - Under the down tube. - Original Halfords PDI form. - Purchase receipt. - Service paperwork. - Insurance documents. ## What a Carrera frame number looks like A Carrera frame number is normally a unique alphanumeric code, which means it uses letters, numbers or both. It is not the model name, wheel size or part number. Parts can be changed, but the frame number is the bike’s main identity. ### Not the frame number - Carrera Subway - Carrera Vengeance - Carrera Crossfire - Carrera Virtuoso - Carrera Hellcat - 27.5 inch - 700c - Shimano part codes - Brake or fork model numbers - Shop stock labels - Tyre markings ## Buying a used Carrera Carrera bikes are popular used buys in the UK because they are common, practical and usually good value. Models like the Subway, Vengeance, Crossfire, Hellcat and Virtuoso often appear on the second-hand market, so the frame number is especially important. Before buying, ask the seller for: - A clear photo of the frame number. - The original receipt or PDI form if available. - Photos of both sides of the bike. - The exact model and size. - Details of any upgrades or replaced parts. - A clear reason for sale. ## What if the Carrera frame number is missing? A missing frame number should make you pause. There may be an innocent reason. Dirt, paint, cable guides or frame guards can hide it, and older bikes can have shallow stamping that is hard to read. But if the number looks scratched off, filed down, painted over or deliberately removed, treat that as a serious warning sign. If you are buying and the number is missing: 1. Ask for the original receipt or PDI form. 2. Ask for proof of ownership. 3. Check the seller name against the paperwork. 4. Ask where and when the bike was bought. 5. Walk away if the answer feels wrong. A bike without a readable frame number can be harder to insure, register, sell or recover if stolen. ## Bottom line The first place to look for a Carrera frame number is underneath the bike, between the pedals. Clean the bottom bracket area, copy the full code and take a photo. If you are buying used, check the number before paying. A Carrera can be a smart second-hand buy, but the frame number is what helps make it a safe one. ## Frequently asked questions ### Is a Carrera frame number the same as a serial number? Yes. Frame number and serial number usually mean the same thing. It is the unique identifying code attached to the bike frame. ### Where is the frame number on a Carrera Subway? On most Carrera Subway bikes, check underneath the bottom bracket first. That is the underside of the bike between the pedals. ### Where is the frame number on a Carrera Vengeance? On most Carrera Vengeance mountain bikes, the frame number is usually underneath the bottom bracket. Clean the area first, as mud often hides the code. ### Where is the frame number on a Carrera Crossfire? On most Carrera Crossfire hybrid bikes, start underneath the bottom bracket. If you cannot see it there, check the rear dropout, seat tube and original PDI form. ### Where is the frame number on a Carrera e-bike? Check underneath the bottom bracket first, then check near the motor area and original paperwork. The motor and battery may have their own numbers, but those are separate from the bike frame number. ### Can Halfords find my Carrera frame number? Halfords says the number is normally shown on the PDI form supplied when you receive the bike. If the purchase was recent, the original store may be able to help find a copy, but you should keep your own record. ### What if the Carrera frame number has been removed? Do not buy the bike unless there is very strong proof of ownership. A removed or damaged frame number is a major red flag. ### Can I check if a Carrera bike is stolen by frame number? Yes. Use the frame number to run a stolen-bike check before buying. Also ask for proof of ownership and make sure the seller details and bike details match. ### How do I register a Carrera bike in the UK? Find the frame number using the locations described above, then record it against your Carrera. 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 Carrera is worth: https://www.cyclesite.co.uk/value/carrera - Stolen Carrera bikes: how to check one before you buy: https://www.cyclesite.co.uk/stolen-bikes/guide/stolen-bikes-by-brand-carrera - Used Carrera prices by model: https://www.cyclesite.co.uk/value/carrera - Used Carrera bikes for sale: https://www.cyclesite.co.uk/bike-brands/carrera - Alternatives to Carrera and how they hold value: https://www.cyclesite.co.uk/bike-brands/carrera/alternatives - Frame numbers for other brands: https://www.cyclesite.co.uk/trust/frame-numbers Source: Cyclesite editorial, reviewed 2026-06-11. HTML version: https://www.cyclesite.co.uk/trust/frame-numbers/carrera