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Bicycle Locks and Alarms

53 products

Find bike locks and alarm systems here — U‑locks, chains, cables, combination locks and electronic alarms suitable for urban commutes, travel or storage. These products increase peace of mind by protecting against theft and tampering. Browse by security level, weight and portability to pick the best lock or alarm for your bike and routine.

Bestseller

-9%

Lock Switch for Bicycle (Nylon chain), 100 cm

-12%

Alarm Lock with Remote Control for Bike Scooter ATV

-15%

Lock Switch for Bicycle (Nylon chain), 80 cm

-21%

Folding Bicycle Combination Lock
Rockbros RKS626-BK U-lock Bike Lock, Black
RockBros
Bicycle and Motorcycle Alarm with Remote Control
New
Rockbros LFCXR0085 Folding Combination Bike Lock, Black
RockBros
New
Rockbros RBK6N Combination Bike Lock - Green
RockBros

-9%

Combination Padlock for Suitcases and Bags, Black

-19%

Forever Outdoor KYL-100 Combination Bike Lock, 8x1000mm, Black
Forever Outdoor
Bestseller
Trizand 25733 Folding Combination Bike Lock, Black
Trizand
U-Lock Bike Lock with Combination
Bicycle and Motorcycle Alarm with Remote Control
Gotel
Folding Bike Lock Heavy Duty 80cm, Anti-Theft Key Lock for Bicycles and Scooters
Rockbros RKS507-1BK Combination Bicycle Lock 1.8 m, Black
RockBros

-5%

Bicycle Alarm Anti-Theft Motorbike Horn

-13%

Combination Bicycle Lock, 100cm, Black
Rockbros RKS515-BK Keyed Bicycle Lock, 1.1 m, Black
RockBros
Rockbros RKS610-BK U-Lock Bicycle Lock, Black
RockBros
Rockbros WD795 Foldable Bicycle Lock, Black
RockBros
New
Disc Brake Lock with Alarm Rockbros LBAYG8308 - Orange
RockBros

-5%

Forever Outdoor KYL-110 Spiral Combination Bike Lock, Black
Forever Outdoor
New
Rockbros 32120005001 Combination Bike Lock 115 cm, Black
RockBros
New
Rockbros 32120007001 Bicycle Code Lock with Steel Cable, Black
RockBros
New
Rockbros 32120010003 RBK6N Combination Bike & Helmet Lock, 120 cm, Black
RockBros
New
Rockbros 32210826001 Fingerprint Bike Lock - Black
RockBros

-9%

Rockbros 3230002001 Bicycle Lock with Combination and Key, 0.95m, Black
RockBros

-14%

Rockbros 3240001001 Combination Bicycle Lock, 0.5 m, Black
RockBros

-15%

Rockbros 32420981001 Bicycle Lock with Retractable Cable - Red
RockBros

-9%

Rockbros 32430708001 Bicycle Lock with Key, 0.97 m, Black
RockBros
New
Rockbros 829 Folding Combination Bike Lock 32140006001 Black
RockBros
New
Rockbros Foldable Bicycle Lock with Key, 68 cm, Black
RockBros
New
Rockbros LBAYG8308 Bike Disc Brake Lock with Alarm - Black
RockBros
New
Rockbros LKXR2006 Folding Bike Lock with Key, Black
RockBros
New
Rockbros LKXR2010 Folding Bike Lock with Key, Black
RockBros


This category covers a wide range of bicycle security products, from lightweight cables to heavy-duty U‑locks and alarm systems. You will find mechanical locks (U‑locks, chain locks, cable locks, padlocks and combination locks) as well as electronic alarms with motion sensors and loud sirens. Each product type targets different needs — portability and convenience for short stops, or maximum resistance for long-term outdoor parking.

Typical use cases include daily city commutes, leaving a bike at work or a shop, storage in garages or sheds, and taking bikes on trips. For quick stops, compact cable or folding locks can be convenient. For public racks or unattended parking, choose U‑locks or thick chained locks. Electronic alarms are useful as an additional deterrent, signaling tampering and drawing attention.

Common materials include hardened steel, anti‑corrosion coatings, robust alloy linkages and protective polyurethane covers that prevent frame scratches. For alarms, pay attention to waterproofing rating, battery life and sensitivity settings. Important characteristics to consider are lock shackle thickness, chain link size, locking mechanism quality, and the overall weight you’re willing to carry.

How to choose the right product: assess where and how long you normally leave your bike, how valuable it is, and whether portability matters. For higher value bikes, a combination of a strong U‑lock and a chain or a monitored alarm gives extra protection. Check for spare keys, resettable combinations, mounting brackets for transport, and maintenance requirements. Regular cleaning, lubrication of the locking mechanism, and battery checks for alarms will extend product life.

  • Variety of types: U‑locks, chains, cables, padlocks, combination and electronic alarms.
  • High‑strength materials and anti‑corrosion treatments.
  • Different trade‑offs between portability and security level.
  • Alarm features: motion sensors, adjustable sensitivity and loud sirens.
  • Options to combine mechanical locks with electronic deterrents.
  • Simple upkeep — cleaning and lubrication prolong service life.
  • Mounting accessories and spare key/combo options available.

Frequently Asked Questions

Resistance varies by material and design. Hardened steel U‑locks and thick chain links provide superior protection compared to thin cables. No lock is completely impervious, so combining a solid mechanical lock with an alarm increases overall security.
Many alarms are built with water resistance and a specified operating temperature range, but battery performance can drop in extreme cold. Check the product IP rating and manufacturer guidance for outdoor use.
Regular cleaning, drying after rain and occasional lubrication of the locking mechanism help prolong lifespan. Replace or service damaged parts and check batteries in electronic alarms periodically.
Lightweight locks are fine for children's bikes and low‑risk areas, but for outdoor public racks choose sturdier options with anti‑corrosion treatment. Consider portability and ease of use for kids while balancing security needs.