All Seatylock locks, except the standard Seatylock model, are Sold Secure certified (Diamond, Gold, or Silver). Sold Secure is a leading testing and certification organization, managed by the Master Locksmiths Association (UK).
The Seatylock security scale was created to provide a clear and accurate way to assess each lock's security level. Rated from 1 to 18, it helps customers choose the lock that best fits their security needs. Seatylock's scale is the only internal rating system aligned with an official external standard, Sold Secure. We recommend that customers consider objective, independent ratings like Sold Secure in addition to any internal manufacturer rankings when selecting a lock.
Yes, it does. For full details, please visit our Warranty page.
To claim your extended 3-year product warranty you must register your keys here.
Seatylock's key duplication service lets you place an order for key duplication online and then submit your key codes. Your new keys will be delivered directly to your door. After placing your order, please send your key codes (e.g., A: B:) to order@seatylock.com.
To order new keys, you must provide your key code number. To protect your codes from being lost or misplaced, we strongly recommend registering your keys in our system at the time of purchase.
If you don't have your codes, you can order blank keys (if you still have one original key left). We will send you 2 blank keys, which you can take to a local locksmith for duplication, using the original key.
Currently, only the Foldylock Compact Duo Pack Key Alike, Foldylock Forever Duo Pack Key Alike, and Foldylock Classic Duo Pack Key Alike come with a matching key set.
At this time, we cannot offer locks that match an existing lock key.
Stay tuned for future updates as we expand this feature.
Please reach out to us here. Our team is dedicated to providing prompt, high-level support, and we aim to respond to all inquiries within 2 business days.
For more details, please visit our Returns Policy page. For additional information or instructions, contact us at info@seatylock.com.
All Seatylock products are crafted at our privately owned facility in China, ensuring the highest standards of quality and precision.
Seatylock products feature the Wafer Tumbler Locking Mechanism. The same mechanical concept used in the Automotive industry, to achieve maximum security & reliability.
All Seatylock products come with a 12-month standard warranty from the date of purchase, in accordance with applicable local consumer protection regulations. You can extend the warranty to 3 years by registering your keys within 3 months of purchase using the Key Registration Form on our website.
To activate your free 3-year extended warranty, simply register your keys within 3 months of purchase using the Key Registration Form on our website.
Once registration is completed, you will receive a Key Registration Confirmation Letter, and your warranty will automatically be extended to 3 years from the purchase date.
We recommend keeping this confirmation together with your Key Code Card, as both may be required for:
If your product was purchased through a retailer, bike shop, or another online store, please contact the original place of purchase.
Warranty claims for these purchases are handled by the original retailer.
If your product was purchased directly from Seatylock.com or the official Seatylock Amazon stores, you can submit your warranty claim through our Contact Us form.
To help us process your request quickly, please include:
Our customer support team will review your request and guide you through the next steps.
The warranty covers material, manufacturing, or workmanship defects, as well as product malfunctions that are not caused by misuse, abuse, or external force.
If a product is confirmed to be faulty, we will recommend repair or provide a replacement, depending on the situation.
The warranty does not cover:
To help us review your claim efficiently, please provide:
Providing complete information helps our support team process your claim faster.
Lost keys are not covered under the warranty.
However, if you kept your Key Code Card or completed key registration, you can order duplicate keys using your key code.
Foldylock is Seatylock's premium range of folding bicycle locks, designed to combine high security with compact size and everyday convenience.
Unlike traditional U-locks or chain locks, Foldylock uses hardened steel plates connected by patented ultra-secured rivets. This design allows the lock to fold into a compact shape for easy carrying while providing strong resistance against common theft tools.
The Foldylock series is designed for urban riders, commuters, and e-bike users who want a smart balance between:
All without compromising on design or build quality.
The Foldylock family includes a wide range of models, each designed to fit different riding styles and security needs:
Foldylock Elite is a top-tier folding lock offering extended locking length and advanced construction. It is one of the few folding locks to achieve both Sold Secure Gold and ART 3-Star certification, making it suitable for insurance-driven markets and higher-risk urban areas.
Foldylock Forever is our highest-security folding lock, engineered for demanding environments and high-value bicycles, including e-bikes. Security ratings include Sold Secure Gold and ART 3 Stars certifications.
Foldylock Classic is the original Foldylock model, offering a strong balance between security, flexibility, and weight for everyday commuting.
Security rating: Sold Secure Silver
Foldylock Compact is a lighter and more portable folding lock, designed for urban riders who prioritize convenience while maintaining reliable theft protection.
Security rating: Sold Secure Silver
Foldylock Mini is an ultra-compact folding lock designed for short stops or as a secondary lock in lower-risk environments.
Security rating: Sold Secure Silver
Foldylock Clipster is a wearable folding lock that can be clipped onto a belt or bag, offering maximum portability and quick access.
Security rating: Sold Secure Silver
Yes. Foldylocks with the red ring are genuine Seatylock products. Those are identical locks in design and performance but distributed through selected sales platforms and partner retailers.
The best Foldylock model for your needs depends on:
For high-risk areas or e-bikes: Foldylock Forever or Foldylock Elite.
For daily commuting: Foldylock Classic or Compact are excellent choices.
For maximum portability: Foldylock Mini or Clipster may be the best fit.
You can also use the Foldylock Comparison Chart to help choose the right model for your needs.
Sold Secure (UK)
An independent certification that evaluates locks under realistic attack scenarios. Foldylock models are rated Silver or Gold.
ART (Netherlands)
A widely recognized European security certification often required by insurers. Selected models such as Foldylock Elite carry ART 3-Star certification.
Additional certifications include:
Learn more here: Seatylock Security Certifications
Foldylock locks provide an excellent balance between lightweight design and high security. You can watch our Durability Test Video here to see for yourself.
Yes. All Foldylock locks include a dedicated mounting solution for easy and secure attachment to the bike frame, along with scratch-protective coatings and high-quality automotive grade locking cylinders with reversible keys.
Yes. All Foldylock models are weatherproof and rust resistant. Every component is tested in environmental chambers to ensure long-term durability even in extreme weather conditions or high humidity environments.
No. Foldylock cases include a unique rattle-free mechanism, ensuring a quiet and stable ride.
Installation is quick and simple. For step-by-step instructions please watch the Installation Video.
Foldylock locks are designed to be simple and intuitive to operate. Watch the Foldylock Operation Video to see how it works.
Foldylock fits a wide range of bikes and bike frames. The case can be mounted using:
All Foldylock models come with 3 keys and a Duplication Key Code Card which contains your unique duplication code to be used if you ever need to order a spare key for your lock.
We strongly recommend registering your key code here.
Your key duplication code is printed on the back of the red Key Code Card attached to your lock key set.
We won't be able to duplicate a key for you without those Key Duplication Codes, please keep this card in a safe place and register your key code on our website.
You can purchase spare parts and accessories here.
If you need further assistance, please contact us at info@seatylock.com.
Installation is quick and easy. For full installation instructions please see the installation video.
The Mason series is Seatylock's line of high-security U-locks, designed to provide maximum protection against common theft methods such as bolt cutters and leverage attacks. The series combines hardened steel construction with user-friendly design and strong mounting solutions.
The U-locks provide reliable theft protection and ultimate security with maximum internal security ranking and a Diamond Sold Secure Certification. The U-locks are an ideal solution for maximum protection in theft-ridden areas.
The Mason series is Seatylock's line of high-security U-locks, designed to provide maximum protection against common theft methods such as bolt cutters and leverage attacks. The series combines hardened steel construction with user-friendly design and strong mounting solutions.
The main differences between the models are shackle size and structure, which determine the level of security and usability.
For most commuters, Mason 180 offers the best balance of security, size, and weight.
Riders who prefer a more compact lock may choose the Mason 140, while those seeking maximum protection for high-risk areas should consider the Mason 220 or Mason 300.
For most commuters, Mason 180 offers the best balance of security, size, and weight.
Riders who prefer a more compact lock may choose the Mason 140, while those seeking maximum protection for high-risk areas should consider the Mason 220 or Mason 300.
Mason locks are suitable for:
For high-value e-bikes or overnight parking, the Mason 220 or 300 is recommended.
Depending on the model, Mason locks are tested according to recognized European security standards and are designed to provide strong resistance against cutting and leverage attacks. You can find more here.
Mason 140/180 - Sold Secure Diamond, ART 3 Stars, FUB 2 Wheels etc.
Mason 220/300 - Sold Secure Diamond, FUB 2 Wheels etc.
The Mason series uses hardened steel shackles combined with reinforced locking mechanisms designed to resist cutting and torsion attacks.
The lock body is protected with durable coatings to prevent scratching the bicycle frame.
While no lock can be completely grinder-proof, Mason locks are designed with hardened materials and reinforced structures that significantly increase the time and effort required to cut the lock. This added resistance helps deter opportunistic theft.
No. The multi adaptor mounting bracket is sold separately. The reason for this is that we know that many cyclists don't use adaptors for mounting brackets and prefer other solutions for transporting their lock. By selling the mounting bracket separately we offer our customers the option of choosing their preferred solution and a chance to save an unnecessary cost for those who don't need a mounting bracket.
Each Mason lock is supplied with three keys and a Duplication Key Code Card which contains your unique duplication code to be used if you ever need to order a spare key for your lock.
We strongly recommend registering your key code here.
We won't be able to duplicate a key for you without those codes if you ever need one in the future.
Yes. For maximum protection, many riders choose to combine a U-lock with a secondary lock.
Yes. Mason locks are designed for all-weather use, with protective coatings and internal components built to resist corrosion and outdoor conditions.
The Viking Series is a range of high-security chain locks designed for urban cyclists who need strong, flexible protection for everyday use and higher-risk areas. Developed specifically for city and urban bikes, the Viking Series offers the ideal balance between security, portability, durability, and ease of use.
The Viking Series is engineered with hardened steel chain links designed to resist cutting, sawing, and leverage attacks. Viking Gold features 10 mm square shape hardened steel links and is our premium high-security chain lock, combining maximum protection with durability and ease of use. Sold Secure Gold certification 17/18 internal security rating Viking Gold is designed for riders who demand maximum security without compromising on usability. Viking Silver features 7 mm square shape hardened steel links, offering the perfect balance between everyday security and portability. It provides the same core features and lengths as Viking Gold in a lighter format. Sold Secure Silver (Bicycle Silver level) 12/18 security scale Viking Silver is ideal for riders looking for strong protection with reduced weight.
The Viking Series combines: Unique square-shaped hardened steel chain links Premium double-layer neoprene protective sleeve Patented magnetic fixation mechanism High-quality automotive-standard cylinder Together, these features deliver a unique combination of high security, effortless operation, portability, and premium design.
The patented magnetic fixation system helps guide the chain into position, allowing faster and easier locking. It enables partial locking alignment, making daily locking and unlocking smoother and more effortless.
Yes. The Viking Series uses square-shaped hardened steel links, which provide increased strength and resistance compared to traditional round chain links. The design makes the lock highly resistant to standard bolt cutters and improves protection against cutting and leverage attacks.
The Viking Series features an automotive-standard cylinder engineered for: Smooth and reliable operation High resistance against picking Improved protection against drilling and manipulation
The Ice Spray Certification indicates enhanced resistance against extreme cold-based attack methods, helping improve the lock’s real-world security performance.
No. The premium neoprene chain sleeve helps protect the bike frame from scratches and impact. It also reduces moisture exposure, improves durability and minimizes chain rattling during transport.
The flexible chain design allows multiple locking options, making it easier to secure your bike to various fixed objects. Viking Silver and Viking Gold are available in multiple lengths: 90 cm 110 cm 140 cm
Yes. The Viking Series is designed for outdoor use and includes multiple protection features: Rust-resistant metal components Double-layer neoprene protective sleeve Auto-Shutter cylinder protection system
The Auto-Shutter mechanism automatically protects the locking cylinder from dust, water, and dirt. This helps maintain smooth operation and extends the lock’s lifespan.
No. The neoprene sleeve is specifically designed to significantly reduce rattling and provide quieter transportation.
Yes, it can be used for light scooters. For motorcycles, a dedicated heavier-duty motorcycle lock is recommended
Each Viking Series lock comes with 3 keys. We recommend registering your Key Duplication Code with us to ensure you can order replacement keys anytime and receive your extended 3-year warranty free of charge.
Yes. Replacement keys can be duplicated using the unique Key Duplication Code provided with your lock. Please keep this code in a safe place for future use.
Seatylock is provided with a special universal adaptor that makes it compatible with any bike on the market. Watch this installation video to understand it better.
Yes. The Seatylock can be adjusted forwards and backward and also tilted upwards and downwards to your favorite saddle position. Watch this installation video to understand it better.
We have engineered Seatylock to comply with many riding styles. Currently we offer 2 kinds of saddles: Trekking & Comfort. They suit almost any urban rider preference.
Let's look at the weight of Seatylock in comparison to the total weight of other locks and seats. Guess what? The total weight of Seatylock, 1.3kg (saddle type dependency), is less than the avg. combined weight of 90% of the top saddles and locks combined.
Not at all. It is a 1-2-3 type of operation. In fact, it takes less than 10 seconds to take Seatylock out from the seat post and turn it into a complete lock. It is faster than operating most locks in the market. Watch this operation video to see how easy that is.
No. The Hardened steel links are covered with plastic to protect your bike's frame from scratches.
The saddle is replaceable. We offer saddles in different models and styles for sale. Comfort saddles / Trekking saddles. The saddle you will order comes with all the accessories needed for replacement - it is as simple as screwing two bolts. Watch this Saddle replacement video to see how easy that is.
SeatyGo rails are universal and they fit 100% of standard seat posts. SeatyGo installation is similar to any other standard bike saddle. For full installation instructions please see the installation video.
Yes! they are. The rails for all SeatyGo models are similar, and thus compatible with all types of bikes. SeatyGo's compatibility makes it modular so you can switch between models as you like. For example, if you have a fixie bike and for some strange reason would like to use the "ebike" model, we say go for it!
Yes, it does! SeatyGo "ebike" is a wide and ergonomic saddle designed for the needs of E-bike commuters, but it can fit any type of bike. Due to its design it is a great solution for larger bikes, like cruisers.
SeatyGo went through rigorous fatigue testing (100 kg vertical punches X 200,000 times) to ensure high level durability.
Currently that's not possible.
Seatylock is the manufacturer of SeatyGo. We assemble all SeatyGo models at our own factory facility. The saddle platform is manufactured by one of the leading saddle manufacturers in the world.
Lost locks are not covered under warranty.
Each Foldylock includes a detailed Installation Guide to help ensure the lock case is properly mounted and secured. It is important that the case is installed with the opening facing upward and that the lock clicks fully into place.
When installed correctly, the lock cannot be released from the case during riding.
If your question wasn't answered please feel free to contact us and we will do our best to answer any question and clarify any issue.