Kryptonite New York Long Shackle Bike U-Lock, Heavy Duty Anti-Theft Security Bicycle Lock Sold Secure Gold, 16mm Long Shackle with Keys, Ultimate Security Lock for Bicycles E-Bikes Scooters

It’s solid , good

Back in 2021 I decided to upgrade my bicycle locks. One because I purchased an Ebike and 2 I live in at the beach, high bike thefts. Due to storage constraints, my bike is locked in the front yard of my home. The other night these two yahoos tried to cut the lock off. Extra large bolt cutters! First the bigger guy, than they tried each holding on to one side and it slipped and smacked the big guy. Look of defeat as the walked out of my yard was priceless. UPGRADE AND NEVER WORRY AGAIN! After posting this on my Nextdoor I was bombarded with request of the exact lock. These guys get a perfect 5 star review on this lock!!

Just as expected. Highest grade of quality and security for my ebike. Worth it to protect my investment.

Heavy duty lock, I may or may have not used it as a mallet on a few occasions. Keys have a button function that emits a blue spot light which helps find the lock port in the dark (included spare key has the same feature). I have put this lock through boatloads of abuse and it's still working 8 years later.

I will start my review by saying that as expected, the lock is extremely sturdy and heavy, weighing 4 pounds 5 ounces and comes with three keys. The shackle is 3/4" thick and the locking mechanism is 1 1/2" in diameter, which is a great deterrent for most of the opportunity bike theft situations since it should be extremely hard for someone to defeat the lock without the use of some power tools. The interior dimensions of the shackle are 4" wide and 10 1/4" from the top center bottom of the shackle to the top of the yellow locking mechanism which is longer and wider than most. The yellow locking mechanism also removes completely from the double-post shackle when unlocked which allows for easy securement of the the frame and rear tire (and the front tire if you remove it) to most posts. The lock exterior dimensions are 6 5/8" x 12 7/8".The entire U-lock is coated with a durable vinyl coating, which has held up well even after the lock falling off of the bike twice after being jolted off by heavy bumps. My only gripe is the black cover on the locking mechanism rotates easily if twisted and can keep the shackle from locking, not a very big issue if you handle the locking mechanism by the yellow cover instead when placing and removing the lock. The bottom of the lock has a sliding key hole cover which is easy to operate and locks in and out place. The lock uses a high-security type key which makes the lock very pick-resistant and should be far more secure than the previous round tumbler designs from Kryptonite (some can be opened using a Bic pen!). One of the keys has a built in LED light which is very bright if you need to use it at night. If you register the lock key code on Kryptonite's Website you can receive a replacement should you ever lose the keys that come with the lock. The theft guarantee had too many restrictions to be useful, so I wouldn't use that as a primary reason to purchase this lock.The reason I didn't rate the lock 5-stars is at first the locking mechanism would stick at times, making it difficult to remove the key. I used some silicone spray in the key hole which has definitely helped. The other issue is that since this is such a large and heavy lock, finding somewhere to secure it on your bike isn't easy. I hang the lock from a bracket on the handlebars that is for a front basket and the weight of the lock is sufficient to keep it from moving unless you go over a very large bump in the road. Overall this would be an excellent and high security lock for anyone leaving a bicycle unattended for long periods of time or in a high crime area. For other situations like a quick trip to the store it's probably overkill, but is great for piece of mind as long as you don't mind the added weight on your bike and have a way to carry it.If you don't have a convinient place to carry the lock on your bicycle and don't mind a shorter length U-lock, the Kryptonite New York Standard Bicycle U-Lock with Bracket ( 4-Inch x 8-Inch) might be a better choice since it basically a shorter (4" x 8") and a bit lighter (3.9lbs) version of the New York LS U-Lock, with the same 16mm shackle and includes a bracket to mount the lock on your bike.

The first thing I did was use a wire brush on the keys, they were very rough. Once the edges were "lightly” buffed up, the keys when into the lock very easily. The lock must be pushed all the way onto the two posts of the ring. The key must also be inserted fully into the lock before trying to turn the key. Following this the lock works well.

The lock itself is hefty so be aware this is not a light item. I love the dust cover over the lock. It is easy to use and very secure. I do wish I could have the yellow area in other colors, but that'd just a personal preference. Overall they did it again with another great bike lock!

At first, I was a little worried that the lock was going to be a little big for general use. I have nowhere to put it other than to hang it on the handle while I am biking, but after using it on a variety of bike racks, I have realized that the size was a great choice. Preferably you use it on the frame of the bike and on the bike rack that way it can't be easily dealt with. For example, if you were to lock your tire down, the tire could be easily and simply removed, and the rest of the bike freed from its captivity. The only thing I wish was that there was a good way to lock it to the bike when not in use... Other than that, great lock!