The Evolution Mini-5 U-Lock, (and Mini-7, as well as Mini-9 with FlexCable) are great high security bike lock options.
http://www.kryptonitelock.com/content/kryt-us/en/products/product-information/current-key/000983.html
13mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks
Reinforced cuff over crossbar and cylinder for added security
High security, disc-style cylinder
Bent Foot™ shackle design for ease of use
Center keyway defends against leverage attacks
Anti-rattle bumpers reduce noise during transport
Rotating dustcover protects cylinder
Includes new Transit FlexFrame-U transportation system which allows for versatile carrying
Protective vinyl coating
3 stainless steel keys – one lighted with high intensity LED bulb & replaceable battery
Key Safe Program
Price: $49.99
Kryptonite Evolution Mini-5 13mm U-Lock Bicycle Lock with FlexFrame-U Bracket
The Kryptonite Evolution Mini-5 U-Lock features a 13 mm hardened max performance steel shackle with a double deadbolt anti-rotation design that resists bolt cutters and twisting leverage attacks. The lock’s disc-style cylinder with center key... (as of December 6, 2019 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
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Kryptonite Evolution Mini-7 Bicycle U-Lock w/ 4' KryptoFlex Double Loop Cable
13mm hardened MAX-PERFORMANCE STEEL SHACKLE resists bolt cutters and leverage attacks. Includes 4’ KRYPTOFLEX™ DOUBLE LOOP CABLE for securing front wheel or accessories. Reinforced CUFF OVER CROSSBAR and cylinder for added security. HIGH SECU... (as of December 6, 2019 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
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Kryptonite New York Lock Fahgettaboutit Mini 18mm U-Lock Bicycle Lock
The Kryptonite New York Lock Fahgettaboudit Mini U-Lock features a 18 mm hardened max performance steel shackle with a double deadbolt anti-rotation design that resists bolt cutters and twisting leverage attacks. There is also a steel sleeve ... (as of December 4, 2019 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
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![[663] The ORIGINAL Bike U-Lock Picked (Kryptonite K3)](https://img.youtube.com/vi/Qn6UdATFKcU/0.jpg "[663] The ORIGINAL Bike U-Lock Picked (Kryptonite K3)")
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Hey, I just bought the lock with my new bike off Amazon. I have a few questions, I like to take my bike to the gym. The gym I go to is in a high density area which is questionably one of the worst areas in our city. I know the brand itself is a good deterrent for wannabe bike thieves, how long would it take for someone to break the lock and how loud would they be while doing so? Sorry if the question is a little hard to answer.
Hello, I have no intention of mounting this lock to my bike (i always have a bag and it’s a track bike), can I remove the bracket bit? Cheers
Just did a review on this lock…wanted to drop by and say I’ve had it for more than two years and it hasn’t failed me yet. So, trust me, it’s more than marketing hype. The lock is reliable and effective.
Does it have a protective vinyl coating so that the lock doesnt scratch the bicycle frame ???
I’ve got one of these and it’s very irritating. The individual lock bits inside all rotate with vibration so when I try to put the key in, it can take me several minutes to get them all lined up so the key will go in all the way, and so I can unlock it. Never had such a nuisance lock! I’ve put some thick-ish grease in, which has helped a bit, but still a pain.
Cab you still open these with a pen, or did you guys fix that?