Thule is the world's best-selling roof rack brand. Their key system is logical, well-documented — and still confusing if you've never dealt with it before.
This guide cuts straight to what you need: how Thule's lock system works, where your code is, and how to order the right key without guesswork.
How Thule's Lock System Works
Thule roof racks use a barrel lock system with small flat-profile mechanical keys. There is no electronic component — the key is purely mechanical, cut to a specific profile that matches the lock cylinder.
Every Thule lock is stamped with a code from their N-series range (e.g. N001, N047, N121). That code is all you need to order the correct replacement.
The Thule One-Key System
Thule's One-Key System (also called the Thule Lock System or TLS) lets you set all lock points on your rack to the same key code. This means one key opens every clamp, every bar end, and every accessory lock on your setup.
It's a significant convenience — and it means losing that one key locks you out of everything at once.
If you use the One-Key System, your single N-series code covers all your locks. Order that code and you're back in business.
Where to Find Your Thule Key Code
The code is always present — you just need to know where to look.
1. On the lock barrel face Look at the front of any Thule lock on your rack. The N-series code is stamped directly on the metal face of the cylinder. It typically reads: N followed by three digits (e.g. N047).
2. On your original key If you still have one working key, the code is usually stamped on the bow (the flat part you grip).
3. On the key card When Thule locks are sold new, they include a small plastic or paper key card with the code. Check your rack's original packaging or documents.
4. Via Thule's website Thule offers a code lookup service on their website for registered products. You'll need the product serial number.
5. Ask your dealer If you bought the rack from a specialist retailer, they may have a record of the code linked to your purchase.
Thule N-Series: Common Codes and What They Cover
Thule N-series codes run from N001 upward. Not all codes are in active use — the range was introduced progressively and some early codes are discontinued.
Commonly requested codes include:
- N001–N030 — older Thule rack generations, still widely fitted to cars from the 2000s–2010s
- N031–N100 — mid-generation racks, very common on European vehicles
- N101–N200+ — current generation, including Thule Evo, Edge, and WingBar systems
If your rack is from 2010 or later and was purchased in Europe, your code almost certainly falls in the N031–N200 range.
Thule Lock Types: Are They All the Same Key?
No. Thule uses more than one lock type depending on the rack system.
Foot locks — secure the rack feet to the car's roof rails or gutters. These use the N-series code.
Bar end locks — secure the crossbars. On newer systems these are integrated into the foot lock and share the same code. On older systems they may be separate.
Accessory locks — Thule bike carriers, ski holders, and box locks can be keyed to match your rack. If they were purchased as part of a One-Key set, they share your N-code.
If your rack has multiple lock types with different codes, you'll need to identify each one separately.
What to Do When You Can't Find the Code
The lock is still on the car and functional: A locksmith can decode the lock — either by reading the key cuts visually or by cutting a new key through impressioning. This is the fastest physical solution.
The lock is damaged or the key is broken inside: You'll need a replacement lock cylinder. Order the correct Thule lock set for your rack model — it will come with two new keys and a new code card.
You have a photo of the lock face: Send it to a specialist supplier like mr-key.com. Experienced teams can often identify the code from the keyway and stamping visible in a photo.
Thule Key Replacement: Step by Step
- Locate any Thule lock on your rack
- Read the N-series code stamped on the lock face (e.g. N121)
- Check how many locks you have — do they all share the same code, or are there different codes?
- Order replacement keys by that exact code — one to replace the lost key, one spare
- Store your code — photograph it and save it somewhere permanent
Thule Rack Models and Their Lock Compatibility
| Rack System | Lock Type | Code Format |
|---|---|---|
| Thule Evo (current) | Integrated T-track | N-series |
| Thule Edge | Flush integrated | N-series |
| Thule WingBar Evo | Bar + foot lock | N-series |
| Thule SmartRack | Gutter mount | N-series |
| Thule ProBar (older) | Separate bar locks | N-series |
| Thule 754 / 751 feet | Classic feet | N-series |
All current Thule lock systems use the N-series. If your rack is a Thule product from the last 20 years, the N-series code applies.
How Many Keys Should You Have?
Thule recommends two. One to use, one to keep somewhere safe — not on your keyring.
A Thule replacement key costs under €10. A Thule lock cylinder costs €25–€40 per point. A full lock set replacement for a four-point rack with accessories can easily reach €150+.
The spare key is the cheapest insurance you'll ever buy for your rack.
FAQ
Q: My Thule key says N047 — is that the same as just "47"? A: Yes. Some suppliers list codes without the N prefix. N047 and 047 refer to the same Thule key. Always include the N prefix when searching to avoid confusion.
Q: Can I rekey my Thule locks to a different code? A: Yes, with Thule's One-Key System. You can purchase new lock cylinders set to a code of your choice and replace the existing cylinders. This is useful when buying a second-hand rack with an unknown code.
Q: Will a Thule key from an old rack open a new one? A: Only if the N-series code matches. The physical code, not the age of the rack, determines compatibility.
Q: I have four lock points but only two show a code — do the other two share the same code? A: On One-Key System setups, yes. All lock points are set to the same code. Read one, you know them all.
Q: My key broke off inside the lock — what do I do? A: Do not force it. A locksmith can extract a broken key from a barrel lock. Once extracted, order your replacement by the code stamped on the lock face.
Q: Can I order just one key or do I need to buy a pair? A: You can order a single key. We recommend ordering two — one replacement and one spare.
Q: How fast can I get a replacement Thule key? A: From mr-key.com, delivery to most European countries takes 2–5 business days. Germany, France, Italy, Greece, Romania: typically 2–4 days.
Order Your Thule Replacement Key (Fast EU Shipping – Same-Day Dispatch)
You have the code. You know the system. There's nothing left to do but order.
Visit mr-key.com and search by your Thule N-series code. We cut and ship Thule replacement keys across Europe — fast, accurate, and at a fraction of dealer prices.
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