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Seatylock Mason 140 U-Lock
Price in EUR including VAT
Delivered between Wed, 29.4. and Sat, 9.5.
More than 10 pieces in stock at supplier
More than 10 pieces in stock at supplier
free shipping
Colour2
Product details
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.
Lock type | U-Lock |
Thickness | 13.70 mm |
Closing mechanism | Key |
Weight | 970 g |
Item number | 57904481 |
Manufacturer | Seatylock |
Category | Bike locks |
Manufacturer no. | UM14CM |
Release date | 18.4.2025 |
Colour | Black |
Exact colour description | Black |
Material group | Metal, Plastic |
Material | Hardened steel, Silicone |
Lock type | U-Lock |
Thickness | 13.70 mm |
Security level | 3 |
Closing mechanism | Key |
Country of origin | France |
CO₂ emissions | 8,12 kg |
Climate contribution | EUR 0,20 |
Scope of delivery | 3 keys, Lock, two stickers |
Length | 8.50 cm |
Width | 14 cm |
Weight | 970 g |
Length | 20.60 cm |
Width | 13.50 cm |
Height | 3.10 cm |
Weight | 1.03 kg |
Specifications may include unverified machine translations.
14-day cancellation right
30-day right of return
30-day right of return
24 Months statutory warranty
Legal concerns
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Reviews & Ratings
Statutory warranty score
How often does a product of this brand in the «Bike locks» category have a defect within the first 24 months?
Source: Galaxus- SeatylockNot enough data
- 1.Vorel0 %
- 2.Burg Wächter0,2 %
- 3.BBB0,3 %
- 4.Kryptonite0,4 %
Statutory warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Galaxus- SeatylockNot enough data
- 1.Abus0 days
- 1.Fischer0 days
- 1.HipLok0 days
- 1.Kryptonite0 days
Return rate
How often is a product of this brand in the «Bike locks» category returned?
Source: Galaxus- SeatylockNot enough data
- 1.Vorel0 %
- 2.FTM0,6 %
- 3.Hama0,7 %
- 4.Hudora1 %
Source: Galaxus

