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SKU: LK8019

OnGuard Mastiff Chain Lock with 13mm Titanium-Reinforced Steel Links, 3.7ft Non-Slip Cover & Bright Key, Anti-Theft Security for Bikes and Cycling Equipment

Regular price $87.96
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Description
Specifications

Secure Your Bike with the OnGuard Mastiff Chain Lock - 3.7 Feet x 10mm Black and Yellow

The OnGuard Mastiff Chain Lock is the ultimate high-security solution for cyclists seeking robust protection against theft. Crafted from ultra-hardened, titanium-reinforced steel links, this 10mm thick chain offers superior strength and durability to safeguard your prized bike. Paired with a 13mm hardened padlock featuring advanced anti-theft technology, this lock provides peace of mind during your daily commute, trail rides, or long-term parking.

Materials & Construction

Designed with premium, ultra-hardened steel links reinforced with titanium, the Mastiff Chain ensures maximum cut resistance and resilience against tampering. The chain features a non-slip cover for added protection and to prevent potential scratching or damage to your bicycle's paint and frame.

Performance & Engineering

Engineered for supreme security, this chain lock combines high tensile strength with innovative anti-theft features valued by security-conscious cyclists. The 13mm padlock incorporates advanced locking mechanisms, making it resistant to picking, cutting, and leverage attacks. With a length of 3.7 feet, it provides flexible and versatile locking options, whether securing your bike to racks, posts, or other fixed objects.

Components & Technology

Includes 5 laser-cut keys-one with a built-in light for easy unlocking in low-light conditions-plus a spare. The lock's cylinder design delivers smooth operation while enhancing security. The integrated anti-theft protection valued at $3,001 ensures top-tier security standards for bike owners.

Style & Use Case

Featuring a bold black and yellow color scheme, the Mastiff Chain Lock combines durability with visibility, deterring potential thieves. Its adaptable length makes it suitable for various locking scenarios, ideal for city commuting, trail riding, or bike storage in high-theft areas.

Innovative & Differentiating Features

- Titanium-reinforced, ultra-hardened steel links for maximum cut and leverage resistance

- 13mm hardened padlock with advanced anti-theft technology

- Non-slip chain cover to prevent bike damage

- Includes a lighted key for convenient unlocking at night

- Premium laser-cut keys with high security and durability

Optimize Your Security

Protect your bicycle with the OnGuard Mastiff Chain Lock - engineered for strength, reliability, and peace of mind. Perfect for urban, trail, and commuter riders seeking high-performance locking solutions with proven anti-theft protection.

Keyword Search: Bicycle lock, bike security chain, heavy-duty bike lock, anti-theft bike lock, high-security bike lock, bike lock with keys, titanium-reinforced chain, locking bike chain, city bike lock, trail bike security

  • High-security bicycle lock featuring ultra-hardened, titanium-reinforced steel links for maximum cut resistance and durability, ideal for high-theft-risk areas.
  • Constructed with 10mm thick links and a robust 13mm padlock, offering superior strength and anti-theft protection valued at $3,001, perfect for securing bikes of all types.
  • Designed with a non-slip chain cover to prevent scratches and protect your bike's paint, combined with a compact 3.7-foot length for versatile use in urban or trail environments.
  • Includes five laser-cut keys with one lighted key for quick access in low-light conditions, ensuring reliable and convenient bike security during night rides or early mornings.
  • Engineered for performance with corrosion-resistant materials, suitable for all weather conditions, making the Mastiff Chain and Padlock the ideal heavy-duty lock for cyclists who demand reliability and peace of mind.
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We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

The nitty gritty, for specific delivery timelines please pay attention to the delivery timelines on the product pages and the time frame estimated in the carts. If you need a part by a specific day, please contact us by chat, phone, or

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Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

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If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

Customer Loyalty

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You Control the Outcome

If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

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Customers, 365 Team, Partners, all need the will to win. Bring the Will to Win to every conversion.

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Move the body, move the mind, and remove any hurdles to achieving an active lifestyle.

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Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

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Customer Reviews

Based on 23 reviews
83%
(19)
13%
(3)
4%
(1)
0%
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0%
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a
alex

Great quality and security for price.;

a
ana lucia

Perfecta;

R
RA

Great price for top of the line chain lock;

F
Francine

Much more than I needed so I haven’t used it yet. But appears to be a good lock.;

C
Chris G

Excelente! Más que excelente. Superó todo lo que esperaba. Para los que tienen duda del peso sí son 3.5kg y fisicamente es intimidante. Completamente recomendable;