Image of Kryptonite Series 2 U Lock with 4 Foot Kryptoflex Cable
Lock & 4ft Cable Dispatched in 1-2 days ID: 53962-148441
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Kryptonite Series 2 U Lock with 4 Foot Kryptoflex Cable reviews verified by reevooReevoo

Value for money
Overall rating
Scores 8.5 out of 10 based on 40 reviews
9 out of 10


Edinburgh GB City bike rider.
My husband and I have bought 3 of these locks and recommend them very highly. We bought a 3rd when the other one was bent out of shape (but not broken in the least!) when a determined robber attempted to steal one of our bikes.
The older locks have a much more simple and sleeker bracket for carrying the lock on the bike. The newer version has a bracket that is hard to mount to the bike and doesn't seem to stay on firmly.
Confirmed purchase: 10 February 2016
Published on: 09 March 2016
10 out of 10


GB I'm fussy
Great lock. Great value at the sub 25 quid mark. This one was a gift for a friend after my original one served well.
May not fit in a smaller frame.
Confirmed purchase: 09 December 2015
Published on: 12 January 2016
8 out of 10


Exeter GB
Comes with extension lead
Comes with warranty
Comes with insurance
only 6 strength, but good for size, weight and money
Confirmed purchase: 07 December 2015
Published on: 07 January 2016

What are the delivery costs?

We offer Free UK Delivery on all orders.

Including: Channel Islands, Isle of Man, Isle of Wight, Northern Ireland, Scottish Highlands and Scottish Islands.

Standard delivery is normally 2 - 5 working days.

International delivery costs and delivery times vary for different countries. Please see here for more information.

Christmas delivery

For guaranteed Christmas delivery please order bikes before 11am, Tuesday 20th December and all other items before 11am, Wednesday 21st December. Guaranteed Christmas delivery applies to all items with the icon, please choose your option/size to see if the specific item you are after qualifies for Christmas delivery.

The Kryptonite Series 2 U-lock and Kryptoflex cable combined offers the high level or security you get from a U-lock, with the added protection of being able to loop through quick release wheels to stop thieves from running away with them.

Kryptonite continue to maintain their reputation for quality by offering £800 anti-theft protection on their Series 2 lock, which is recommended for moderate-to-high risk crime areas.

Security enhancements on the Series 2 come in the form of a 13mm hardened steel shackle, dead-bolt locking mechanism, a hardened cross bar which is reinforced for added strength and a water resistant vinyl covering to reduce corrosion which can weaken locks.

Not only is the series 2 tough, it is designed to be easy and practical to use. The FlexFrame-U carrying system means you can take this lock with you anywhere, and the carefully designed bumpers help to keep any annoying rattles to a minimum.
  • Dimensions: 4” x 9” (10.2cm x 22.9cm)
  • Weight: 3.60 lbs (1.63 kgs)