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Where is the frame number on a Moustache bike?
Find your Moustache e-bike serial number before you buy, sell or register it.
Find your Moustache e-bike serial number before you buy, sell or register it.
Moustache gives clear serial-number guidance. On many Moustache e-bikes, the serial number, also called the chassis number, is behind the seat tube, between the motor and the rear wheel. It begins with the letter H and is followed by letters and numbers. On bikes fitted with the Bosch Smart System and bikes produced in 2023, Moustache says the serial number is under the down tube near the head tube, with a QR code in the same place.
That number matters. It helps you register the bike, check if it has been reported stolen, prove ownership, value it and sell it with more buyer confidence. Here is where to find it, how to read it, and how to check it before you buy.
Check a Moustache frame number
Free, instant, no signup. Enter the number stamped on the frame to check it against a stolen-bike registry and rider-filed theft reports.
The serial number on a Moustache bike usually starts with H and is followed by letters and numbers. On many models, it is behind the seat tube between the motor and rear wheel. On Bosch Smart System and 2023 bikes, check under the down tube near the head tube.
On many Moustache e-bikes the serial number sits behind the seat tube, between the motor and the rear wheel. Newer Smart System bikes move it under the down tube.
Make sure you copy the full number. A single missing or misread character can give the wrong result.
Moustache gives an example format: H followed by letters and numbers, such as H3EVM08928. The number may also be shown on the purchase invoice. Do not confuse the bike serial with a rear-triangle part number, motor number or battery number.
Do not use the model name, tyre size, barcode on a shop label, or any number printed on a component. The frame number belongs to the bike frame itself. For example, these are not usually the frame number:
The number you want is the unique frame code that belongs to the frame itself.
Moustache specifically warns that the number on the rear triangle is not the bike serial number. That is an important buyer check. Use the serial number on the frame or invoice, not a removable or replaceable part number.
A frame number is one of the most useful details on a used bike. It connects a Moustache to its owner, its registration record and any stolen-bike reports.
You may need it to:
If you own a Moustache, take a photo of the frame number and keep it with your receipt. If the bike is ever stolen, that detail can make a real difference.
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:
Red flag. Be careful if the seller refuses to show the frame number, says they cannot find it, gives only a partial code, or pressures you to pay quickly. A genuine seller should understand why you are checking.
Found the number? Run a free stolen-bike check before you buy. Enter the Moustache frame number into the checker and look for any matching reports. It only takes a moment, and it can help you avoid buying a bike with a bad history. If the bike looks clear, you can also value it and compare similar Moustache bikes for sale.
Report it as soon as possible. You will usually need the frame number, photos, make, model, colour, size, location and any unique marks or upgrades.
Include anything distinctive, such as upgraded wheels, unusual tyres, scratches, stickers, lights, mudguards, racks or replacement parts. The more detail you provide, the easier it is to identify the bike if it appears for sale.
Check behind the seat tube between the motor and rear wheel. On newer Bosch Smart System bikes, also check under the down tube near the head tube.
On Bosch Smart System and 2023 bikes, check under the down tube near the head tube. Otherwise check the frame around the seat tube and motor area.
Start behind the seat tube between the motor and rear wheel, then check the invoice.
Yes. Moustache says the bike serial number begins with H and is followed by letters and numbers.
No. Moustache says the rear triangle number is the serial for that part, not the bike’s serial number.
Yes. Use the H-prefixed serial number to run a stolen-bike check before buying, and ask for the purchase invoice too.
Looking for another brand? See the full bike frame number guide.
The quickest place to find a Moustache serial number is behind the seat tube, between the motor and the rear wheel, or under the down tube near the head tube on Bosch Smart System and 2023 bikes. Look for the code starting with H, copy it in full, then check it before you buy, sell or register the bike. A used Moustache can be a brilliant buy, but the serial number is the detail that protects you.
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Bike frame number guide · What bike is this? · What you can check on a used bike · Buying a used bike safely · Moustache bikes
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Last reviewed by the Cyclesite editorial team. Published by Cyclesite, Companies House No. 13238473.