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Blackburn Sing Sing Compact U-Lock

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Providing excellent security for your bike, the Blackburn Sing Sing Compact U-lock uses a clever shape to reduce susceptibility to attacks.

  • Compact-length 14mm-thick steel shackle features a hexagonal shape to prevent the shackle from spinning, increasing resistance to cutting and leverage attacks
  • Lining helps protect your bike's finish from scratches and scuffs
  • Dual-bolt lock mechanism engages the shackles on both ends to maximize bump- and pick-resistance
  • The Blackburn Sing Sing Compact U-lock comes with 3 laser-cut keys and a mounting bracket


Item 833793


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Blackburn Sing Sing Compact U-Lock Specs
Best use
Key lock
18 millimeters
6.2 x 3 inches
2 lbs. 5 oz.
Lock style
Lock type
Lock thickness (mm)

Blackburn Sing Sing Compact U-Lock

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Blackburn Sing Sing Compact U-Lockis rated4.0out of5by1.
Rated4out of5byfromGreat LockBought this lock due to its size and durability. So far, I'm very satisfied with the lock. The only downside to it was the bike attachment if you wanted it to be stored/attached to the bike while in transit. The locking attachment wasn't greatly designed so I just tossed it out. Instead, I attach the lock to my backpack. It's easier to access for quick lock-n-go process. If you are the type of person who would prefer to have the lock attached to the bike while riding, then buy a Kryptonite instead since their lock/bike attachments are better. However, if you don't mind attaching the lock to your waist, backpack or just hanging from your handlebars then get this one. It's easy to lock and unlock.
Date published: 2013-03-02

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