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Kryptonite Evolution Series 4 Standard Bicycle U-Lock with Bracket (4-Inch x 9-Inch)
By: Kryptonite

Average Rating: 4.0     Total Reviews: 20

Features:
  1. Tough bicycle U-lock designed for moderate to high crime areas
  2. 14mm hardened Max-Performance steel shackle resists cutting and leverage attacks
  3. Double deadbolt locking mechanism; disc-style cylinder with over 1 million key variations
  4. Center key location with dual overhead cam locking mechanism
  5. Includes 3 keys, including 1 with high-intensity light; measures 4 x 9 inches

Dimensions: Length: 12" Width: 2" Height: 6.5"


Product Description:

Kryptonite Series 4 Evolution U-Locks made of 14mm, hardened MAX-Performance steel shackle with double deadbolt design.

Where to Buy

SellerPriceShipping
Seasonal Outfitters Incorporated$38.20 1-2 business days
Seasonal Outfitters Incorporated$42.00 1-2 business days
Amazon.com$43.95(Free Shipping) Ships in 24 hours
BikeWorldUSA$46.99 1-2 business days
Lakeville Self Storage$49.48 1-2 business days
BikeWorldUSA$49.85 1-2 business days
Xtreme Bike & Sport$50.05 4-5 business days
BikeSomeWhere$51.59 2-3 business days
Niagara Cycle Works$54.72 3-4 business days
BikeWorldUSA$60.69 1-2 business days
Lowest New Price Found: $38.20
Lowest Used Price Found: $40.99

Reviews
Medium duty lock, crumy bracket       rating
by:       on: 30-Oct 2009

I bought this lock for my kid's bike. The bike isn't a high end bike, (I got it used for a hundred bucks or so at a garage sale.) so I figure this and a 4 ft 10mm cable for the front wheel, plus the 5mm seat cable ought to at least make thieves try the next bike over first. The lock is considerably thicker than the older Kryptonite Evolution LS U-Lock lock I got when I traded back my old Kryptonite LS cylinder key lock. And that trade in is the reason I've kept buying Kryptonite locks. Talk about doing the right thing! Anyway back to this lock. It's rated "9" which isn't as high as the New York version but it looks reasonably tough.

On the key breakage, the folks at Kryptonite must read these reviews because mine came with a note saying, "Don't force the key!". And I've got another Kryptonite lock Kryptonite New York Noose 1213 Chain Bicycle Lock with Evolution Series 4 Disc Lock Chain Bicycle Lock (4-Foot x 3-Inch) and I ride a lot, and I've had no problems with the lock. Which is a good thing because cutting that chain and lock off my bike would be a royal pain. This key looks similar so I'm not worried. However I will remind the kid to not force the lock.

On the negative side, the plastic dohicky for holding the lock on the bike sucks. Just plain poor design. My recommendation is to put the lock in your shoulder bag, or panniers. It's heavy but you'll be happier than trying to make this holder work. I also slid the silver bit off the lock, why carry it around when you aren't going to use it?
Powerful lock with a few annoyances       rating
by:       on: 09-Oct 2009

Overall, I would say this lock is really good. It's going to protect your bike very well in most locales. For extra safety I got a cable lock that I loop through this and around other portions of my bike. I'm pretty satisfied with it so far, but I will go over the items that bother me about it. The blue LED key is also pretty awesome.

The biggest issue is it might not fit all bike models well, both in locking and mounting it on the bracket. I ride a Cannondale Quick series bike. I was hoping this would fit around both the Seat Tube and the rear tire for good security, but in most situations it is only able to fit around the Seat Tube because the lock is fairly narrow. If I want it to fit around both I have to position it at a skewed angle which usually isn't possible in many locking situations.

As for attaching the mounting bracket: the Top Tube and Down Tube on this bike model are not cylindrical, instead they are shaped like a triangle, which means you can't mount this lock on either. Having a water bottle cage on either the Seat tube or down tube also makes mounting this bracket pretty difficult. It took me over an HOUR of deep frustration to finally find a place on my bike to mount the bracket and lock where it wouldn't get in the way of my legs when riding. It was midway down on the left side of the Seat Tube with the U of the lock facing upward, but I also had to angle the bracket out away from the bike at a really weird angle, I also had to loosen and angle the silver bracket mount on the lock itself differently.
If you don't plan on bracket mounting this lock then you can ignore all this, but if you do, be warned, you might be in for a LOT of aggravation.
Now that it's mounted it works fine, no problems.

The Kryptonite key replacement/registration is a nice feature but a bit annoying. You goto their website, which is unsecured (very obnoxious) and register your personal info and key serial #, except there are two numbers printed on the key and I'm not sure which is the serial.

The anti-theft protection offer is also better than it sounds, as you have to jump through a LOT of hoops to benefit from it if your bike is ever stolen.
Great Product       rating
by:       on: 30-Sep 2009

I live in Eugene OR and just got a new Long Haul Trucker Surly of course and needed a good lock to make me feel at ease. It's done its job!
Broke... Perhaps for the best.       rating
by:       on: 16-Aug 2009

First off, this lock got jammed in the locked position the fist day I had it. In a way, I was relieved that I had a good excuse to send it back, because it was not the right lock for me.

Choosing the right bike lock is not easy. If you live in a high crime area (NYC in my case) and have a relatively expensive bike (a carbon fiber Trek in my case) you don't want to buy something that seems easy to cut. This is why I opted for the Evolution Series 4. I am sure that it would not have been cut, but there are some huge trade-offs. First and foremost, this lock is very heavy. For me, it was not worth lugging this lock around.

If you are parking your bike outside, only in the day and in the evening, it seems unlikely that your bike will be taken by someone spending an hour or two cutting through a U-Lock. Something less intense than the Evolution Series 4 will probably work for you.

I replaced the lock with the Kryptonite Series 2 and I am extremely happy with it. I have not had any lock problems and it seems secure enough for my purposes.

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