# Where is the frame number on a Genesis bike? Canonical: https://www.cyclesite.co.uk/trust/frame-numbers/genesis Last reviewed: 2026-06-11 **Quick answer:** The frame number on a Genesis bike is most likely to be underneath the bottom bracket. If it is not there, check the head tube, seat tube, down tube, chainstay and rear dropout. There is no universal Genesis prefix to count on, so use the full number on the frame. On a Genesis, check underneath the bottom bracket first. If you cannot find the number there, check the head tube, seat tube, down tube, chainstay and rear dropout. There is no single published Genesis serial prefix or fixed location to rely on, so use the full number on the frame and match it with the original dealer receipt where possible. ## Start under the bottom bracket. This is the most common place to find a Genesis 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 Genesis registration email or paperwork. - With the Genesis dealer that sold the bike. ## What a Genesis frame number looks like A Genesis frame number should be a unique alphanumeric code. On steel frames, it may be stamped into the frame. On carbon or aluminium models, it may be etched or label-based. ### Not the frame number - Genesis Croix de Fer - Genesis Equilibrium - Genesis Fugio - Genesis Datum - Genesis Tour de Fer - Genesis Vagabond - Genesis CDA - Genesis Tarn - Reynolds 725 - Reynolds 853 - Mjolnir - 700c - 650b - Shimano component code - SRAM component code - EN or BS safety number - Fork serial number - Wheel serial number ## Long-lived steel bikes, long histories Genesis bikes are often steel gravel, touring or adventure bikes with long ownership lives. For used buys, check the frame number alongside receipts, service history, racks, mudguards and any frame modifications. ## Buying a used Genesis 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 Genesis 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 Genesis can be a brilliant buy, but the frame number is the detail that protects you. ## Frequently asked questions ### Is a Genesis 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 Genesis bikes have a frame number? Most Genesis 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. ### Where is the frame number on a Genesis Croix de Fer? Check underneath the bottom bracket first. If it is not visible, check the rear dropout, chainstay and head tube. ### Where is the frame number on a Genesis Equilibrium? Start underneath the bottom bracket. On older steel frames, clean the area and look for stamped characters. ### Where is the frame number on a Genesis Fugio? Check underneath the bottom bracket, then the down tube and rear dropout. ### Where is the frame number on a Genesis Tour de Fer? Start under the bottom bracket. Touring accessories and dirt can hide the number. ### Where is the frame number on a Genesis Vagabond? Check underneath the bottom bracket first, then the rear dropout and chainstay. ### What if the Genesis 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 Genesis 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 Genesis bike in the UK? Find the frame number using the locations described above, then record it against your Genesis. 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 Genesis is worth: https://www.cyclesite.co.uk/value/genesis - Stolen Genesis bikes: how to check one before you buy: https://www.cyclesite.co.uk/stolen-bikes/guide/stolen-bikes-by-brand-genesis - Used Genesis prices by model: https://www.cyclesite.co.uk/value/genesis - Used Genesis bikes for sale: https://www.cyclesite.co.uk/bike-brands/genesis - Alternatives to Genesis and how they hold value: https://www.cyclesite.co.uk/bike-brands/genesis/alternatives - Genesis Croix De Fer vs Ribble Cgr: https://www.cyclesite.co.uk/compare-bikes/genesis-croix-de-fer-vs-ribble-cgr - 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/genesis