Riese & Müller has one of the clearest official frame-number guides. The frame number usually begins with WRJ2 on newer bikes. Older bikes may begin with RM, CUP, AVP, KEP, 6PG or PY. It is usually engraved on the drive side above the motor, sometimes hidden behind the chainring or pulley. Depending on model, it can also be under the down tube, at the bottom of the seat tube, under the battery or on the underside of the drive-side chainstay.
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 Riese & Müller frame number
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The frame number on a Riese & Müller bike usually starts with WRJ2 and is engraved on the frame. It is usually on the drive side above the motor, sometimes behind the chainring or pulley. Older frame numbers may start with RM, CUP, AVP, KEP, 6PG or PY.
Start on the drive side, above the motor.
Riese & Müller engraves the frame number on the drive side above the motor on most models, sometimes hidden behind the chainring or pulley.
- Position the bike so you can see the drive side clearly.
- Look above the motor, around and behind the chainring or pulley.
- Use a torch and check from several angles. The engraving can sit partly behind the drivetrain.
- Check the white sticker on the frame and the e-bike passport for the same number.
- Take a clear photo of the engraved number, not just the sticker.
Make sure you copy the full number. A single missing or misread character can give the wrong result.
Can’t find it above the motor?
If the number is not on the drive side above the motor, check these places next:
- At the bottom of the seat tube.
- On the underside of the down tube.
- Under the battery.
- On the underside of the drive-side chainstay (UBN, Culture, Charger5 Mixte and Nevo5).
- Below the bottom bracket (Birdy).
- In the e-bike passport or on the invoice.
On older bikes, repainted frames and heavily used bikes, the number can be harder to read. If it has been scratched off, covered, filed down or looks tampered with, treat that as a serious warning sign.
What does a Riese & Müller frame number look like?
A Riese & Müller frame number usually starts with WRJ2 on newer bikes. Older bikes may use prefixes including RM, CUP, AVP, KEP, 6PG or PY. The number can also be found on the white sticker on the frame, in the e-bike passport and sometimes on the invoice.
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:
- Riese & Müller Load
- Riese & Müller Nevo
- Riese & Müller Charger
- Riese & Müller Supercharger
- Riese & Müller Multicharger
- Riese & Müller Delite
- Riese & Müller SuperDelite
- Riese & Müller Tinker
- Riese & Müller Homage
- Riese & Müller Birdy
- Riese & Müller Culture
- UBN
- Bosch motor number
- Battery serial number
- Display serial number
- RX Connect number alone
- Charger number
The number you want is the unique frame code that belongs to the frame itself.
The engraving can hide behind the chainring
The frame number can be partly hidden behind the chainring, pulley or motor area. If you are buying used, ask for a clear photo of the engraved frame number, not just the white sticker or Bosch system number.
The detail that protects you.
A frame number is one of the most useful details on a used bike. It connects a Riese & Müller to its owner, its registration record and any stolen-bike reports.
You may need it to:
- Check if a Riese & Müller bike has been reported stolen.
- Register your bike.
- Sell your bike with confidence.
- Get an accurate bike valuation.
- Make an insurance claim.
- Report a stolen bike to the police.
- Prove the bike is yours.
If you own a Riese & Müller, 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.
Buying a used Riese & Müller? Check the frame number first.
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.
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.
Check a Riese & Müller frame number on Cyclesite
Found the number? Run a free stolen-bike check before you buy. Enter the Riese & Müller 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 Riese & Müller bikes for sale.
What to do if your Riese & Müller has been stolen.
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.
- Report the theft to the police.
- Get a crime reference number.
- Add the bike to stolen-bike databases.
- Update any existing bike registration record.
- Contact your insurer if you have cover.
- Watch used bike listings for matching bikes.
- Keep photos, receipts and messages in one place.
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.
Riese & Müller frame number FAQs
Where is the frame number on a Riese & Müller Load?
It is usually etched behind the right side of the front sprocket, just above the motor.
Where is the frame number on a Riese & Müller Nevo?
It can be behind the left side of the front sprocket, above the motor. The Nevo5 may also use the underside of the drive-side chainstay.
Where is the frame number on a Riese & Müller Charger?
Check above the motor, sometimes behind the chainring or pulley. The Charger5 Mixte may use the underside of the drive-side chainstay.
Where is the frame number on a Riese & Müller Supercharger?
Check above the motor, around the centre point behind the front sprocket.
Where is the frame number on a Riese & Müller Birdy?
Riese & Müller says the Birdy frame number is below the bottom bracket.
What if the Riese & Müller frame number has been removed?
Do not buy the bike. A removed or damaged frame number is a major warning sign on any bike, and especially on a high-value e-bike.
Can I check if a Riese & Müller is stolen by frame number?
Yes. Use the engraved frame number to run a stolen-bike check before buying. Ask for the e-bike passport and proof of purchase too.
Looking for another brand? See the full bike frame number guide.
Bottom line
The quickest place to find a Riese & Müller frame number is on the drive side, above the motor, sometimes behind the chainring or pulley. Look for the engraved code, usually starting WRJ2, copy it in full, then check it before you buy, sell or register the bike. A used Riese & Müller can be a brilliant buy, but the frame number is the detail that protects you.
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Last reviewed by the Cyclesite editorial team. Published by Cyclesite, Companies House No. 13238473.