Knog Bouncer U-Lock / D Lock
Black 185 x 125 x 35mm Dispatched in 1-2 days ID: 53455-146326
£43.99 Add to basket
Teal 185 x 125 x 35mm Dispatched within 4-7 days ID: 53455-146327
£43.99 Add to basket
White 185 x 125 x 35mm Dispatched within 4-7 days ID: 53455-146328
£43.99 Add to basket

Knog Bouncer D Lock reviews verified by reevooReevoo

Value for money
Overall rating
Scores 8.0 out of 10 based on 1 review
8 out of 10


Cardiff GB
Looks great, very solid looking, looks thick enough that a smaller set of bolt clippers would struggle to get around. easy to use and good jam free locking mechanism.
not very long so have to get bike really close to a thinnish bar to connect to.
Confirmed purchase: 02 April 2013
Published on: 08 May 2013

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.

With a 13mm hardened steel shackle and silicone overmoulded the Bouncer U-Lock is a tough lock that won't scratch or damage your bike. Having been awarded the highest bicycle security SoldSecure Bronze accreditations, the Bouncer is Internationally recognised as a high security U-Lock.


  • Dimensions: 185 x 125 x 35mm
  • Weight: 800g
  • Materials: Silicone overmoulded plated hardened steel U-lock
  • Shackle: 13mm hardened steel shackle


  • Security Rating: 80/100

  • Body: Investment cast steel, with compression moulded silicone shackle outer. UV painted exterior.

  • Scratch Protection: UV resistant Silicone Shackle outer and plastic housing covers

  • Secure Mechanical Assembly: Entire mechanical assembly encased by plastic outer housings - eliminating leverage points. Hardened steel internal housing protects lock mechanism from external attack.

  • Double Dead-lock: Double locking mechanism secures both sides of the shackle, giving a robust, high security solution by ensuring the shackle can't be cut once and twisted open.

  • Lock Barrel Security: High security disk style lock barrel, designed for a minimum of 2500 key combinations.

  • U-shackle security: Heat-treated specifically to create balance between hardness (cutting resistance) and toughness (for tensile and impact resistance).

  • Key Replacement: Each Bouncer is gived with a unique key code. This is fully traceable through Knog if you happen to lose your keys.

  • Packaging: The Bouncer packaging is made from 100% recyclable material.

  • Testing: We subject our locks range to a vast array of environmental tests to ensure they are fit for purpose for everyday use. These procedures are undertaken during research and development through to prototype and manufacture. These include: Drop Tests, Impact Tests, Corrosion Testing, Vibration Testing, Extreme Temperature Testing, Cycle Testing.


Our Bouncer U-Locks have been tested and certified by renowned European Agencies for reliability performance. Although there are no official legislations to comply with, we undertake certification testing to assure our customers that the Bouncer is suitably designed for deterence against theft, and can be covered by insurance where possible. Bouncer has received a Bronze rating from Sold Secure. 

Knog Bouncer U-Lock / D Lock

AVAILABILITY: Please select an option/size (See all options)