# Where is the frame number on a Boardman bike? Canonical: https://www.cyclesite.co.uk/trust/frame-numbers/boardman Last reviewed: 2026-06-11 **Quick answer:** The frame number on a Boardman bike is usually underneath the bottom bracket, between the pedals. If the bike was bought from Halfords, the number may also be listed on the PDI form supplied with the bike. Look for a unique mix of letters and numbers on the frame itself. Most Boardman bike frame numbers are found underneath the bike, between the pedals. That area is the bottom bracket, and it is the first place to check on Boardman road, gravel, hybrid and mountain bikes. Boardman bikes are widely sold through Halfords in the UK, so the frame number may also appear on the Pre-Delivery Inspection (PDI) form handed over when the bike was collected. If you are buying a used Boardman, ask for the frame number and the PDI form or receipt before you pay. ## Start under the bottom bracket. This is the most common place to find a Boardman 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 Boardman registration email or paperwork. - With the Boardman dealer that sold the bike. ## What a Boardman frame number looks like A Boardman frame number is normally a unique alphanumeric code. It may be stamped into the frame, etched into carbon, or shown on a factory label depending on the model, age and frame material. On carbon Boardman bikes, look carefully, as the number may be lighter, etched or printed rather than deeply stamped. On used commuter bikes, mud and road dirt can easily hide the code under the bottom bracket. ### Not the frame number - Boardman SLR - Boardman ADV - Boardman HYB - Boardman MTR - Boardman URB - Boardman MTX - Boardman 8.6 - Boardman 8.8 - Boardman 8.9 - C7 - 700c - 27.5 inch - 29 inch - Shimano component code - SRAM component code - Fork serial number - Wheel serial number - EN or BS safety standard number - Halfords stock label ## The Halfords PDI form Because many Boardman bikes are bought through Halfords, the PDI form is useful evidence. It may list the frame number and can help prove the bike’s history. That said, do not rely on paperwork alone. The number on the PDI form should match the number on the bike frame. If the seller cannot show the frame number on the bike, treat that as a warning sign. ## Buying a used Boardman 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 Boardman 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 Boardman can be a brilliant buy, but the frame number is the detail that protects you. ## Frequently asked questions ### Where is the frame number on a Boardman SLR? On most Boardman SLR road bikes, check underneath the bottom bracket first. On carbon versions, look for an etched number or label rather than a deep stamp. ### Where is the frame number on a Boardman ADV? On most Boardman ADV gravel bikes, the frame number is usually underneath the bottom bracket. If you cannot see it, clean the area and check around the chainstay and down tube. ### Where is the frame number on a Boardman HYB? On most Boardman HYB hybrid bikes, start underneath the bottom bracket between the pedals. Also check the PDI form if the bike came from Halfords. ### Where is the frame number on a Boardman MTR? On most Boardman MTR mountain bikes, check underneath the bottom bracket first. Dirt and frame protection can hide the number, so clean the area properly. ### Is the Halfords PDI number the same as the Boardman frame number? It should be. Halfords records the frame number on the PDI form supplied with a new bike. If you are buying used, make sure the PDI number matches the number on the frame. ### What if the Boardman frame number is missing? Do not rely on the advert or paperwork alone. Ask the seller to show the number on the frame. If it has been removed, damaged or painted over, walk away unless there is very strong proof of ownership. ### How do I register a Boardman bike in the UK? Find the frame number using the locations described above, then record it against your Boardman. 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 Boardman is worth: https://www.cyclesite.co.uk/value/boardman - Stolen Boardman bikes: how to check one before you buy: https://www.cyclesite.co.uk/stolen-bikes/guide/stolen-bikes-by-brand-boardman - Used Boardman prices by model: https://www.cyclesite.co.uk/value/boardman - Boardman Slr vs Ribble R872: https://www.cyclesite.co.uk/compare-bikes/boardman-slr-vs-ribble-r872 - 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/boardman