
Best selling Bike locks from Seatylock
On this page you’ll find a ranking of the best Bike locks from Seatylock. To give you a quick overview, we’ve added the most important product details. This page always stays fresh and updates automatically.
1. Seatylock Mason 140 U-Lock
The safest and lightest U-lock in the world. Unique triangular cross-section profile for the best strength-to-weight ratio. Double-locking mechanism for protection against twisting attacks. Metal and plastic parts are treated against rust and UV rays. The Mason 140 lock is certified with 3 stars by ART.
Technical specifications:
- Shackle thickness: 13.7 mm
- Materials: hardened steel and silicone
- Shackle dimensions: 14 x 8.5 cm
- Weight: 0.97 kg
- The triangular profile of the shackle is patented and offers the best strength-to-weight ratio.
Included in the package: lock, two stickers, 3 keys.
Seatylock warranty:
- All Seatylock products come with a factory warranty of 6 months, which can be extended to 3 years if the customer registers their keys.
- To claim the warranty, the customer must register their key number.
- Each Seatylock keychain has a label with two codes: a Code A and a Code B. These codes are used for key registration and warranty claims, and they are very important. Registering the key numbers also allows for the creation of a duplicate in case they are lost.

2. Seatylock Mason 220 U-Lock
The Seatylock Mason 220 U-lock is a high-security shackle lock specifically designed for urban use. With a wide opening of 115 mm, it is one of the largest U-locks available, allowing for secure attachment to thicker posts, lamp posts, and similar urban fixtures. The lock is made from hardened steel and features a patented pentagonal profile that provides increased strength compared to conventional round shackles. With the highest security rating of 20/20 Sold Secure Diamond and ART3 certification, it is particularly resistant to cutting, drilling, and sawing attacks. The double locking mechanism further protects against twisting attacks. This weather-resistant lock is ideal for city bikes, e-bikes, and scooters, offering reliable theft protection in various urban environments.
- Highest security rating of 20/20 Sold Secure Diamond
- ART3 certification for resistance to cutting, drilling, and sawing attacks
- Patented pentagonal profile for increased strength
- Double locking mechanism for additional protection against twisting attacks.

3. Seatylock Foldylock 110
With a circumference of 110 cm and 6.5 mm thick hardened steel bars, the Foldylock 110 is the ultimate bodyguard. It features a patented rivet protection that shields it from cutting and side sawing. Certified Gold by Sold Secure, it scores 18/18 on Seatylock's internal scale, making it a lock designed for areas with very high theft risks. It is also certified 2 Wheels by the FUB and is the only folding lock in the world to be certified 3 stars by ART.
Technical data:
- The strongest folding lock in the world
- Perfect for electric bikes and high theft risk locations
- Circumference: 110 cm
- The only folding lock in the world to receive the 3-star ART certification
- 6.5 mm thick hardened steel bars
- Patented rivet protection system, which shields them from sawing and lateral cutting
- No rattling for a silent ride
- Automotive standard cylinder, protected against drilling and picking
- Automatic locking mechanism that prevents water and dust from getting in
- Certified FUB 2 wheels
- Certified 3 stars ART
- Certified Sold Secure Gold
- Security level 18/18 on Seatylock's internal resistance scale
- Weight: 1.9 kg
The kit includes: lock, two stickers, holder, keys, an Allen key, two plastic ties.
Warranty Seatylock:
- All Seatylock products come with a 6-month original warranty, which extends to 3 years when the customer registers their keys on the Seatylock website.
- To activate the warranty, the customer must register their key numbers on the Seatylock website.
- On each set of Seatylock keys, there is a label with two codes: an A code and a B code. These codes allow the key to be registered and the warranty to be activated, and they are very important. Registering the key numbers also allows for a duplicate of the keys to be made if they are ever lost.
