Over 2,000,000 Million Customers Served!!!

Need Help? Click the Live Chat to Talk to a Gearhead 💪

Enjoy Free Shipping on Orders Over $75 – Available Within the Lower 48 States!

SKU: ULCK0111

Sunlite Defender U Medium Cable Lock with Hardened Steel Shackle, Double Bolt Locking, Pick-Resistant Cylinder, 4x10mm Cable, Includes Mounting Bracket and 2 Laser-Cut Keys - Secure Bicycle Lock for Enhanced Theft Protection

Regular price $41.59
$45.99 Sale price $41.59 Regular price
Sale Sold out
Unit price
/per 
Save 10%
  • Free Shipping Over $75
  • 30 Day Returns
  • Satisfaction Guaranteed!
Get 5% Off When You Buy 2!

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description
Specifications

Optimize your bike security with the Sunlite Defender U Medium Cable Lock - the perfect combination of durability, advanced locking technology, and versatile use. Designed for cyclists seeking reliable protection for their prized bicycles, this high-performance lock offers superior strength, resistance, and ease of use.

Materials & Construction:

Crafted from a hardened steel shackle, the Sunlite Defender U Medium Cable Lock provides exceptional cut and pull resistance, ensuring your bike stays secure against theft. The heavy-duty cable measures 4 inches by 10mm in diameter, pairing flexibility with resilience, making it ideal for securing frames and accessories in varied environments.

Performance & Engineering:

Featuring a double bolt locking mechanism, this lock delivers enhanced security and tamper resistance. Its pick, pull, and drill-resistant cylinder adds an extra layer of protection, safeguarding your bike from common theft techniques. The included mounting bracket allows for convenient storage when not in use, ensuring quick access and portability.

Components & Technology:

Equipped with two laser-cut keys, the Sunlite Defender U Medium Cable Lock combines precision manufacturing with user-friendly operation. The lock's compact size (approximately 3.5x7 inches / 8.89x17.78 cm) makes it lightweight yet robust, perfect for daily commuting, trail riding, or parking your bike outdoors.

Style & Use Case:

With its sleek black finish and durable construction, this lock seamlessly integrates into your cycling gear. Ideal for urban commuters, mountain bikers, or casual riders, it provides reliable security whether parked at work, home, or in public spaces. Its versatile design fits a wide range of bike types and locking scenarios.

Innovative & Differentiating Features:

- Double Bolt Locking System: Enhances security by securing the shackle at multiple points.

- Hardened Steel Shackle: Offers maximum cut resistance and durability.

- Pick, Pull, and Drill Resistant Cylinder: Protects against common theft methods.

- Included Mounting Bracket: For easy transport and storage on your bike.

- Laser-Cut Keys: Precise, high-security key design for reliable access.

Item Specifications:

- Type: Key lock

- Bracket: Included

- Cable Dimensions: 4 inches by 10mm diameter

- Overall Size: 3.5 x 7 inches (8.89 x 17.78 cm)

Secure your bike confidently with the Sunlite Defender U Medium Cable Lock - the trusted choice for cyclists seeking high-security, innovative features, and dependable performance. Perfect for urban, trail, and recreational cycling, this lock ensures peace of mind wherever you ride.

  • High-security lock featuring a durable hardened steel shackle for maximum resistance against cutting and sawing attacks, ensuring your bicycle remains protected.
  • Equipped with a double bolt locking mechanism and pick, pull, and drill resistant cylinder, this lock offers enhanced security and peace of mind in any environment.
  • Constructed with high-quality materials and precision engineering, the Sunlite Defender U Medium Cable is designed for reliable performance and long-lasting durability during daily use.
  • Includes a convenient mounting bracket and two laser-cut keys, providing easy storage and quick access while maintaining a sleek, low-profile design suitable for urban and trail cycling.
  • Ideal for securing bikes in high-traffic areas or rugged terrains, this lock combines advanced security features with versatile use cases, making it a must-have cycling accessory.
TypeKey
BracketIncluded
Shipping
Returns
About Us
Contact Us

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

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

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.

  • Our Mistake: If we messed it up you can rest assured we are going to make it right. Contact us by email, phone, or chat and we will make your head spin with how quick we fix it
  • Warranty: We are an authorized retailer for everything we sell, so rest assured your product is covered under the manufacturer's warranty. Contact Us if you are having an issue and we will make sure you are taken care of
  • Just don't want it anymore: We have a 30-day return policy for orders within the US. We offer refunds on returned items that are brand new and in their undamaged, original packaging. Customers are responsible for the cost of return shipping. Damaged, installed, and used items as well as those without original packaging are not eligible for returns. If it's returned in this condition it may be denied and sent back to you

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.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

*Please allow up to 3 business days for us to process your return*

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

Put yourself in their shoes and support those who support us.

You Control the Outcome

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

Seek Understanding

Understanding the answer is more important than the answer.

Progress Not Perfection

Pick a direction, analyze the results, and be willing to change course.

Will to Win

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

Keep Moving

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

Do the Right Thing:

Doing the right thing is more important than doing the thing right.

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.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)