Kryptonite Keeper 12 Standard Bicycle U-Lock with Bracket Bicycle U-Lock (4-Inch x 8-Inch)

by Kryptonite

Product Features

• 4-Inch x 8-Inch

Product Description

Kryptonite Keeper U-Locks feature a hardened steel shackle that resists hand tools for security in low crime areas.

• 12mm hardened steel shackle resists hand tools
• Reinforced collar over keyway for increased protection
• High security disc-style cylinder
• Includes click style transportation bracket
• 2 keys - high security, disc-style
• Protective vinyl covering
• High security "Bent Foot" design

Item Specifications
Lock Size	4" x 9"
Bracket Incuded	yes

Product Details

• Product Dimensions: 10 x 7.5 x 2 inches ; 2.4 pounds
• Shipping Weight: 2.4 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000BL1P3O
• Item model number: 720018997955
• Average Customer Review: 3.4 out of 5 stars  See all reviews (44 customer reviews)
• Amazon Best Sellers Rank: #3,781 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • #8 in Sports & Outdoors > Bikes & Accessories > Accessories > Bike Locks > U-Locks
  • #21 in Sports & Outdoors > Bikes & Accessories > Kids' Bikes & Accessories > Kids' Accessories

Customer Reviews

Most Helpful Customer Reviews

39 of 39 people found the following review helpful:

2.0 out of 5 stars Frame clamp is on the wrong side, January 23, 2011

By 

okspeck - See all my reviews

Amazon Verified Purchase

This review is from: Kryptonite Keeper 12 Standard Bicycle U-Lock with Bracket Bicycle U-Lock (4-Inch x 8-Inch) (Sports)

I had the same problem that other reviewers had. I ordered the product anyway because I believed that Kryptonite makes good locks and stands behind their products. I just took it out of the package and noticed a major flaw. The fitting is attached to the opposite side of the lock as it is in the picture (above) and you cannot slide it into the clamp without hitting the bike frame. This is hard to describe but like others above me, I realized that it doesn't work. I thought that this was too stupid of a problem to be real, so I wracked my brain for about 20 minutes trying to figure out why I was so dumb and couldn't figure it out. Turns out, I'm not the one who's dumb--whoever assembled this attachment is! I guess we'll just carry the lock on our handlebars or in a backpack, but as far as attaching the lock to the frame.... FORGET IT! Thanks for reading

29 of 31 people found the following review helpful:

4.0 out of 5 stars Sturdy Bike Lock, December 11, 2007

By 

Boone Helm "Reality is just an illusion albei... (Middle of Nowhere) - See all my reviews

The lock is good but on a scale of 1-12 (12 being safest) this lock rates at a 7. This is Kryptonite's scale, not mine. Since I live in a downtown, sea-side area, bikes get stolen all the time. I use this lock in addition to a thick cable lock. Between locking the bike frame to a solid object using this lock, I intertwine the cable lock (figure 8 style) through & around the frame and through and around the tires. In doing this, even if they break this lock, they still can't ride off AND, they can't steal my tires very easily.
Another suggestion... loose the quick release on your seat. It's hell having to stand and pedal if they steal your seat. Don't make it easy on them.

18 of 19 people found the following review helpful:

1.0 out of 5 stars Stupid design, clamp on wrong side, September 8, 2010

By 

Anthony Nguyen - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Kryptonite Keeper 12 Standard Bicycle U-Lock with Bracket Bicycle U-Lock (4-Inch x 8-Inch) (Sports)

Tempted to send it back, but it wasn't worth the trouble. The clamp is on the wrong side and you can't switch it to the other. Makes the bracket useless. Kryptonite should send all of us new brackets.