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  • Kryptonite Evolution Mini-5 Bicycle U-Lock with Transit FlexFrame Bracket (3.25-Inch x 5.5-Inch)
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Kryptonite Evolution Mini-5 Bicycle U-Lock with Transit FlexFrame Bracket (3.25-Inch x 5.5-Inch)


List Price: $63.95
Price: $49.99 & FREE Shipping. Details
You Save: $13.96 (22%)
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  • 13mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks
  • Higher security disc-style cylinder
  • High security Bent Foot(TM) design
  • 3 keys - one lighted with high intensity bulb & replaceable battery
  • Includes Transit FlexFrame Bracket for easy mounting to frame tubing 25mm to 80mm wheter round, oval, triangular, or square. Also features 360° rotation providing the ability to better fit and align with a bike frame's specific geometry.
45 new from $49.99

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Frequently Bought Together

Kryptonite Evolution Mini-5 Bicycle U-Lock with Transit FlexFrame Bracket (3.25-Inch x 5.5-Inch) + Kryptonite 720018210610 KryptoFlex 3/8" x 7' 1007 Double Loop Security Cable
Price for both: $62.94

One of these items ships sooner than the other.

Buy the selected items together


Product Description

The choice of bike messengers worldwide with a $2000 USD anti-theft protection with a security rating of 9 of out 12.Kryptonite U-locks represent extreme security while maintaining a realistic size/weight. U-locks represent the most popular lock for enthusiasts.In the early 1970s, Michael Zane was a free-spirited, bearded kid with a VW van and a big idea for a new kind of lock. He traveled thousands of miles showing the unique U-shaped locking device and spreading his passion for bicycle security to bike dealers all around the country and forged lifetime relationships. The company soon expanded its product line to include powersports, hardware and snowsports security.

Product Details

  • Product Dimensions: 5.5 x 1.2 x 3.3 inches ; 2.2 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.
  • Origin: USA
  • ASIN: B005YPK9C0
  • Item model number: 152065
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (46 customer reviews)
  • Amazon Best Sellers Rank: #4,270 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Customer Questions & Answers

Customer Reviews

Easily the best lock on the market.
Rom
This lock is just about perfect for my purposes since I can just put in the back pocket of my pants, hop on the bike and go.
Rhandhali
I have a Women's Specialized Vita Sport and I can lock the frame and back tire to a bike rack with no issues.
Shasha

Most Helpful Customer Reviews

21 of 21 people found the following review helpful By The Ice King on October 20, 2013
Verified Purchase
I bought this lock four months ago because I had gotten tired of lugging a 9-inch Kryptonite lock and cable to secure my front wheel and frame. I also had learned that longer locks actually make your bike more vulnerable to theft by giving thieves an opportunity to get more leverage with tools.

The Lock: The lock is what you would expect from Kryptonite. It is compact, well-protected by its rubbery coat, and smooth to operate. It still has some heft to it (don't expect it to be feather-light), and fits in my back jean pocket easily. It comes with a mount that I never bothered to install. Like other reviewers have stated, the mount comes with incomprehensible installation instructions (this is why I knocked a star off, otherwise I would have given full stars).

Using The Lock: I also purchased a locking skewer (from Pinhead) for my front wheel so that I wouldn't have to carry a cable at all. With your front wheel secure, you only have to lock up the back wheel. When I had originally purchased the lock, I was afraid that I would find myself unable to lock my bike to larger poles and what not due to the small size of the U. However, over months of use this has NEVER happened. Perhaps this is because I am fortunate enough to live in a rather bike-friendly area with lots of actual bike racks. However, even when a legit bike rack was not available, I have always found something that I could lock to. Thinner to medium-sized street poles or stair rails have always worked. If you live in an area where huge poles are the only solution to lock your bike to, this lock will not be for you.

I have had this lock for over four months now, with no theft.

Bottom Line: This is a great, secure lock for people who do not want to lug around a huge lock.
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12 of 12 people found the following review helpful By kts on May 31, 2013
Verified Purchase
Wonderfully light and strong lock, with a very flexible and secure mounting system. Product loses a star due to extremely illegible and poorly written mount instructions and pictures that are so small as to be useless, and no electronic version of the instructions on vendor web site.

Mounting help: To install this mount securely you need two people, period. Be sure the nylon band is threaded through the mounting bracket so that the bracket pinches the band between the bike and bracket when the lock mount is screwed into the bracket. Use your assistant to keep the band very taught while you screw the lock mount into the bracket. This undocumented mounting process results in an extremely secure mount that can be placed in many frame and seat post locations. Be sure to note that the mounting clip on the lock itself can be swiveled 360 degrees for proper positioning of the lock almost anywhere on your bike.

Addendum 6/1/2014: While this lock is too small to fit around a wheel, frame and most bike racks, it will usually fit around a wheel and most racks, at least with my 28mm tires. The advice I have read recommends threading the lock through the section of the rear wheel within the triangle formed by the seat tube and the rear hub stays. The thief would have to destroy the rear wheel or cut the lock to get the bike, and they usually don't bother. Unless you take the front wheel with you (or carry dual locks), it is vulnerable, but also cheaper to replace than the bike.
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7 of 7 people found the following review helpful By Rhandhali on March 4, 2013
Verified Purchase
I love this little lock. I live in New Orleans where bike thefts are an everyday occurrence. This lock is just about perfect for my purposes since I can just put in the back pocket of my pants, hop on the bike and go. It's just barely big enough to lock up my rear wheel and the frame to the bike racks, though this can be a bit tricky with larger sized posts or racks given the smaller size of the shackle. It's small size and strength means that I will carry it and I will use it - no need to bother with a backpack to carry a larger lock or cable. The smaller shackle size, while it can make securing anything besides the frame difficult or impossible, is further advantageous because it leaves little room for thieves to insert jacks or other large tools used to break the lock.

I have bolt on front and rear wheels, however, and don't have the same risk of theft that someone with quick release wheels might have. I would highly recommend a secondary locking solution for wheels with this lock as you cannot be sure of being able to secure even one wheel, let alone both, with this lock. Get bolt on skewers or locking skewers instead of the quick release types, any solution that requires a tool to remove wheels if you aren't willing to carry around a cable to run through them.
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5 of 5 people found the following review helpful By Sean O. on July 9, 2014
Verified Purchase
Good, sturdy lock, though I wish I had bought the 7" instead. With my mountain bike wheels it's a very tight fit for most lockup locations. The 7" (which I also bought for another bike) is the perfect size.

The mount that comes with this is also very nice, and doesn't move at all once properly installed. Ignore the manual and instead go to YouTube and watch their installation video: https://www.youtube.com/watch?v=QqaqSG-lfGo. If the link is dead search for "Kryptonite Transit FlexFrame-U Bracket". It's much easier to understand.

As for the theft insurance, make sure you register for it within 14 days of purchase or they may try to deny your claim. It's in the fine print, and not obvious that you have such a deadline.
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Most Recent Customer Reviews