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Contra 900/6V

Gerda Class: Premium Protection
Contra 900 / 6V bicycle lock – a classic in securing bicycles.
Constructed of hardened 6 mm round links.

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  • Scratch protection Scratch protection
  • Protection against dirt Protection against dirt
  • Symmetric key included Symmetric key included





Technical specifications

  • The length of 90 cm allows you to conveniently attach your bike
  • Hardened 6 mm round links
  • A textile cover protects the bike from scratches
  • The key hole plug protects the lock from getting dirty
  • Convenient symmetrical key that is easy to handle, even in the dark
  • The key can only be removed from a closed lock
  • Wrapped on the seatpost, handlebars or in a pannier
  • For securing inexpensive bicycles
  • For fastening the bike in a safe place for a while
  • We recommend that you lock the bike through the frame and the rear wheel
  • It is best to secure the bike to a pole, railing or other fixed architectural element


Gerda Class: Standard Protection

Bicycle chain – a classic in securing bicycles. 6 mm hardened chain link chain with a round cross section with a textile protection sleeve. The CONTRA 900 / 6V bicycle lock is a hardened chain, 90 cm long, made of reinforced steel.
The Gerda lock has a special key hole plug that protects against dust, sand, mud and any other dirt.
The lock is covered with a secure plastic coating that protects the frame from scratching and absorbs accidental impacts.
The set includes a convenient symmetrical key. This technological solution will allow you to easily open the lock in any position, ensuring comfort of use even in the dark.

See other products in the series