Master Lock
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Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D
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Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D
Investing in the Master Lock U-Lock means investing in long-term security for your precious ride.
Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D
Item #: 64229889

Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D

89% of respondents would recommend this to a friend

Item #: 64229889

USD 21

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Saturday, September 12
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Investing in the Master Lock U-Lock means investing in long-term security for your precious ride.
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What Stands Out

High Security
The Master Lock 8170D features a solid, robust design with an advanced locking mechanism, ensuring superior protection against theft and break-ins.
Versatile Size
With a 6-1/8 inch wide body and an 8 inch shackle, this U-lock provides ample space for securing various items, from bicycles to outdoor equipment.
Durable Finish
The sleek black finish not only enhances aesthetics but also protects against the elements, ensuring long-lasting performance and resistance to rust and corrosion.

Product Details

Shop Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D online at a best price in Puerto Rico. B0BSRH3KZ4
Brand NameMaster Lock
Recommended Uses For ProductBike
Number of Pieces1
Included ComponentsLock
Model Number8320D
UPC071649205255
Model Name8320D
Global Trade Identification Number00071649205255
Number of Items1
ManufacturerMaster Lock
Number of Packs1
Unit Count1 Count
Manufacturer Part Number8320D
Additional FeaturesUnlock keys
Lock TypeKey Lock
Controller TypeHand Control
Control MethodTouch
Connectivity ProtocolWi-Fi
Style NameLock
ColorBlack
ShapeU Shape
Material TypeAlloy Steel, Vinyl
Finish TypesPolished
Item Dimensions9.8 x 7.42 x 1.35 inches (24.9 x 18.8 x 3.4 cm)
BrandMaster Lock
Special FeatureUnlock keys
Item dimensions L x W x H9.8 x 7.42 x 1.35 inches (24.9 x 18.8 x 3.4 cm)
MaterialAlloy Steel, Vinyl

Who Should Buy?

Suitable For
  • Urban Commuters

    Ideal for cyclists and scooter users in metropolitan areas needing security for their transportation.

  • Short-Term Parking

    Perfect for securing bikes at public locations for short durations, ensuring quick access and reliable security.

  • Outdoor Enthusiasts

    Great for hikers or campers needing to secure gear and bikes during outdoor adventures.

Not Suitable For
  • Heavy-Duty Requirements

    Not suitable for users needing extremely high-security locks for high-theft areas or valuable equipment.

Product Description

Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the length of the Master Lock 8170D U-Lock shackle?

    Answer: The Master Lock 8170D U-Lock features an 8-inch shackle, making it versatile for securing a variety of items such as bicycles, motor scooters, or gates. This size strikes a perfect balance, providing ample space for most locks while ensuring it remains compact for easy carrying. You can confidently use it in urban settings, ensuring your personal belongings are protected.
  • Question: What materials are used in the construction of the Master Lock 8170D?

    Answer: The Master Lock 8170D is constructed from high-strength steel for the shackle, paired with a durable body coated in black to resist corrosion and wear. This construction is crucial for security, providing superior strength against cutting and pulling attacks. Ideal for use in diverse environments, including cities or near parks, this U-Lock ensures your assets remain safe and secure.
  • Question: Is the Master Lock 8170D U-Lock weatherproof?

    Answer: Yes, the Master Lock 8170D is designed to withstand various weather conditions thanks to its weather-resistant coating. This feature is particularly useful for outdoor use, protecting it from rain, snow, and UV rays that can degrade lesser locks. Whether you’re locking your bike outside a café or storing a scooter in a park, this lock ensures a reliable defense against the elements.
  • Question: What are the security features of the Master Lock 8170D?

    Answer: The Master Lock 8170D incorporates a hardened steel shackle and a robust locking mechanism, which provides enhanced security against tampering and theft. The shackle's design is particularly resilient to cutting attacks, ensuring long-lasting durability. This makes it an excellent choice for securing valuable items in high-crime areas where theft risk is elevated.
  • Question: Can the Master Lock 8170D be used for multiple purposes?

    Answer: Absolutely! The versatile design of the Master Lock 8170D U-Lock allows it to secure bicycles, motor scooters, and even outdoor storage units. Its robust design and adjustable shackle length ensure that it can adapt to various applications at home or while traveling. Whether you’re a cyclist needing to secure your bike in different locations or securing garden tools, this lock provides peace of mind.
  • Question: How does the locking mechanism work on the Master Lock 8170D?

    Answer: The Master Lock 8170D features a dual locking mechanism that secures both ends of the shackle to the lock body. This design not only fosters ease of use but also enhances security by making it difficult for unauthorized access. Users benefit from a straightforward operation when locking or unlocking, perfect for those quick stops when you need to secure your belongings rapidly.
  • Question: Is the Master Lock 8170D suitable for high-crime areas?

    Answer: Yes, the Master Lock 8170D is particularly suitable for high-crime areas due to its robust construction and hardened shackle. The combination of strength and reliable locking systems deters potential thieves. Utilizing this lock in high-risk locations, like busy urban settings or poorly lit areas, can significantly enhance the security of your belongings, ensuring they remain protected.
  • Question: What is the best way to use the Master Lock 8170D for bike security?

    Answer: For optimal bike security with the Master Lock 8170D, loop the lock through both the frame and the wheel, securing it to a solid, immovable object. This configuration minimizes the risk of theft, as a thief would need to cut through the reinforced steel shackle. Additionally, parking your bike in well-lit areas while using this lock maximizes safety and discourages theft attempts.
  • Question: Can I carry the Master Lock 8170D easily?

    Answer: Yes, the Master Lock 8170D is designed for portability, with a compact size and lightweight construction that make it easy to carry. Many users appreciate the convenience of slipping it into a bag or attaching it to a bike frame. This makes it ideal for cyclists and commuters who need a reliable locking solution without the bulk.
  • Question: Where can I buy Master Lock 8170D, 6-18 inch Wide U-Lock with 8 Shackle, Black?

    Answer: You can buy the Master Lock 8170D, 6-18 inch Wide U-Lock with 8 Shackle, Black at Ubuy. This platform provides a convenient shopping experience, ensuring that you can access various products while benefiting from competitive pricing options and suitable delivery services tailored to your region.

Master Lock U-Locks 8320D Editorial Review

** Master Lock 7.25" U Lock with Looped End Cable** The Master Lock 7.25" U Lock with Looped End Cable has garnered a favorable reception from users, emphasizing reliability, ease of use, and robust security features. Many customers appreciate the lock's user-friendly key mechanism that engages smoothly, contributing to a hassle-free locking experience. This aspect is particularly noteworthy for regular cyclists who prioritize quick and efficient locking processes. Durability is a strong selling point, as users report that the lock withstands various weather conditions without compromising its integrity or functionality. While it may be on the heavier side compared to chain locks, this added weight is perceived as a trade-off for improved security. Notably, the U-lock provides ample dimensions to secure both the bike frame and wheel to various fixtures, which enhances its versatility. However, some feedback suggests minor concerns regarding the locking mechanism's sturdiness and occasional finicky behavior in colder weather. Despite these small drawbacks, the general sentiment is overwhelmingly positive, with many customers highlighting the peace of mind that comes from using this lock, especially in more vulnerable urban locations. Overall, the Master Lock 7.25" U Lock emerges as a dependable and affordable option for cyclists looking to enhance their bike security. It appeals to individuals who want an effective deterrent against theft while ensuring ease of use and durability during their daily commutes. **

Customer Reviews & Ratings

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Pros

  • Smooth and reliable key mechanism
  • Durable and weather-resistant design
  • Ample size for securing bike frame and wheel
  • Quick and hassle-free application
  • Vinyl coating protects the lock and the bike from scratches

Cons

  • Heavier than some alternatives, such as chain locks

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“Easy to use and always helpful and sorts any issues I've had past and present”

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“Fast, convenient and cheap. Great store!”

27 August 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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USD 21

Order now and get it around Saturday, September 12

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Engineered for unparalleled security and anti-theft protection.
  • Crafted from hardened steel to resist tampering and cutting.
  • User-friendly design with a double-locking mechanism for added security.
  • Lightweight and portable, fitting easily into backpacks.
  • Imposing presence deters potential thieves.
  • Includes carrier bracket for convenient storage and transport.

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