10 Best U Locks Of 2021

10 best U locks
(Last Updated On: August 19, 2021)

U locks are the giant padlocks. These are also known as D locks. U locks are the ideal choice for keeping your bikes safe and secure during either transportation or preventing them from thieves. However, there is a range of different U locks with different features and specifications offered by different companies.

Here is a list of the 10 best U locks in 2021. The products listed here are based on customers’ reviews and manufacturer’s information. After reading this article, you will be able to find the best product for you depending on the type of your bike and your requirements.

1-Seatylock Mason Sold Secure Gold Bicycle U-Lock

Seatylock Mason Sold Secure Gold Bicycle U-Lock is a uniquely designed heavy-duty lock. It has strong and sturdy triangular-shaped crossbars. This lightweight lock provides the best strength to weight ratio. This U lock is available in two sizes are 5.5 inches and 7.1 inches in length. Added protection to your bikes and bicycles is ensured by its drill-resistant cylinder and double deadbolt locking mechanism. This durable lock has rust-proof metal components. Its plastic cover makes it UV protected so that the lock may resist harsh weather conditions.

Product specifications

Bar thickness 17 mm
No. of keys 3
Item weight 966 g
Product dimensions 14 x 8.5 x 2.5 Centimetres

Features 

  • Approved by Sold Secure
  • Available in two sizes
  • Heavy-duty lock
  • Weather-resistant construction
  • Rattle-elimination mechanism

 

2-Kryptonite U York Fahgettaboudit Mini Heavy Duty Bicycle U Lock 

Kryptonite U York Fahgettaboudit Mini Heavy Duty Bicycle U Lock is one of the most durable locks on this list. This heavy-duty lock efficiently resists bolt cutters, hand tools, and leverage attacks with its 18mm hardened max performance steel shackle. Anti-theft protection offer by kryptonite makes this lock even more appealing to the customers. Even the first two keys will be shipped to the customers free of cost by kryptonite.

Product specifications

Bar thickness 18mm
No. of keys 3
Item weight 2.06 Kilograms
Product dimensions 8 x 3 x 3 cm

Features 

  • Durable steel construction
  • Key Safe Program
  • No assembly required
  • Black color
  • Extended cylinder life Security

 

3-Sportneer Bike Lock Set Heavy Duty U Lock

Sportneer Bike Lock Set Heavy Duty U Lock is made with 0.63in high-quality alloy steel. Moreover, this lock is covered in 0.10in silicone cover that protects it from scratches and wears and tear. This durable construction makes this U lock cut-resistant, drill resistant, and leverage resistant. This U lock comes with a 0.43-inch thick double looped steel cable. This portable U lock is easy to carry around, but heavy enough to keep your bikes and bicycle safe and secure. The two keys included in this lock are rust-resistant.

Product specifications

Bar thickness 0.43 inches
No. of keys 2
Item weight 1 kg 300 g
Product dimensions N/A

Features 

  • Strong and sturdy
  • High-quality construction
  • Additional Cable included
  • Portable U Lock
  • Zinc alloy lock cylinder

 

4-Aibrisk U Lock Bike Lock

Aibrisk U Lock Bike Lock provides advanced security to your bikes due to high-quality steel construction. Preventing dust and dirt, this bicycle lock has covered the outer surface with a silicone layer. It has a 4ft double looped steel cable that is coated with PVC. You can use this bike lock to lock your bikes in different ways. Its mounting bracket holder offers easy installation and storage. This U lock is a perfect gift for different occasions.

Product specifications

Bar thickness 4 feet
No. of keys 3
Item weight 1.22 Kilograms
Product dimensions 22.1 x 13.97 x 6.35 cm

Features 

  • High quality steel construction
  • Double looped cable
  • Easy to Install
  • Provides extra protection
  • Comfortable and convenient

 

5-Master Lock 8170D U Lock

Master Lock 8170D U Lock is an ideal choice to keep your bicycles secure. This outdoor U lock is made with high-quality steel that makes it a strong and heavy-duty lock. Its double-locking shackle makes it cut-resistant thus preventing your bicycles from prying and theft. The package includes a U lock bike lock and two keys. A disc key is included to provide additional anti-pick protection.

Product specifications

Bar thickness 15 cm
No. of keys 2
Item weight 1.96 Pounds
Product dimensions 9.8 x 7.33 x 1.33 inches

Features 

  • Made with Vinyl Wrapped Steel
  • Painted finish type
  • Heavy-duty bike lock
  • Anti-pick protection
  • Pocket-friendly lock

 

6-Kryptonite U York LS Heavy Duty Bicycle U Lock

Kryptonite U York LS Heavy Duty Bicycle U Lock is a sturdy bike lock. It is one of the most durable locks available in the market to keep your bikes safe. This U lock provides enhanced protection against twist and single-cut style attacks with its advanced anti-rotation features. This bike lock has a disc-style cylinder for providing the highest security and making it drill resistant. It is a key safe program with a lifetime warranty making it a highly reviewed bike lock by the customers.

Product specifications

Bar thickness 16 mm
No. of keys 3
Item weight 2.07 Kilograms
Product dimensions 26.04 x 2.54 x 10.16 cm

Features 

  • Drill resistant
  • Anti-rotation feature
  • Advanced protection
  • Single cut style
  • Stainless steel keys

 

7-ONGUARD Brute STD U-Lock

ONGUARD Brute STD U-Lock has a security rating of 97. This U lock provides four-sided protection with its X4p Quattro locking mechanism. This snap lock offers quick release. It has a multi-position mounting bracket that makes it more convenient and safe. This U lock has four extra grip keys and one microlight key that projects a white beam. The dimensions of its long and tri-radius shackle are 111×202 mm.

Product specifications

Bar thickness 16 mm
No. of keys 5
Item weight 1 kg 130 g
Product dimensions 27.9 x 20.3 x 7.6 Centimetres

Features 

  • Four-sided protection
  • Tri-radius shackle
  • Multi-position mounting bracket
  • Laser-cut keys
  • Micro-light key

8-Kryptonite U York Standard Heavy Duty Bicycle U Lock 

Kryptonite U York Standard Heavy Duty Bicycle U Lock is a convenient U lock due to multi-location U lock transport provided by flex-frame U bracket. This heavy-duty bike lock comes with three stainless steel keys. These keys are newly designed and have an LED replaceable key FOB. It has increased holding power due to its double bolts that engage both ends of the shackle aptly. Further pick and its strong disc-style cylinder provide drill resistance.

Product specifications

Bar thickness 16 mm
No. of keys 3
Item weight 2 Kilograms
Product dimensions 8 x 3 x 3 cm

Features 

  • Heavy-duty bicycle lock
  • Crossbar design
  • Anti-rotation feature
  • Maximal performance
  • LED replaceable key FOB

 

9-Kryptonite U KryptoLok Series 2 Standard Bicycle U Lock

Kryptonite U KryptoLok Series 2 Standard Bicycle U Lock is one of the highly reviewed bike locks. This lock is strong enough to resist any hand tools, leverage attacks, and bolt cutters because of its 12.7mm high-quality steel shackle. For providing additional security to your bikes, this lock has a 10mm-steel looped cable. This U lock is one of the best offers by kryptonite globally. It included two stainless steel keys that are ergonomically designed to reduce torque.

Product specifications

Bar thickness 12.7 mm
No. of keys 2
Item weight 1.32 Kilograms
Product dimensions 8 x 3 x 3 cm

Features 

  • Hardened Steel Shackle
  • Key Safe Program
  • Anti-Theft Protection
  • 2 keys for free
  • Lifetime Warranty

 

10-Abus Granit X-Plus 54 Mini Key Bicycle U Lock

Abus Granit X-Plus 54 Mini Key Bicycle U Lock provides the highest protection to your bikes against theft. It has a 13mm square parabolic shackle. This lock is available in black color and has a right-handed orientation. It can be used in all seasons. Its round shape and convenient design make it the favorite lock of the customers. This bike lock comes with two keys, one of which is LED lighted.

Product specifications

Bar thickness 13 mm
No. of keys 2
Item weight 1 kg 360 g
Product dimensions 37 x 22 x 20 Centimetres

Features 

  • ABUS power cell technology
  • Square parabolic
  • Durable steel construction
  • Automatic keyhole cover
  • 2 keys included

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