Kryptonite KryptoLok 990 Combo Chain Lock

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With the spin of a 5-digit code, the Kryptonite KryptoLok 990 Combo chain lock protects your whip from theft using an end-link design that secures directly to a hardened dead bolt.


  • Durable weather-resistant nylon sleeve protects your bike frame against abrasion
  • Patent-pending easy-to-use reset mechanism makes it easy to update your combination
  • Hardened steel lock head with patent-pending dead bolt system secures your bike with the spin of a dial
  • Kryptonite rates this lock a 6 on their 10-point system with 1 being simple, deterrent security and 10 being extreme security
  • Optional Anti-theft Protection Offer of up to $1,750 should you decide to register for coverage at (additional costs may apply)
  • Eligible for Combo Safe Program: Register your combination cable with Kryptonite at no additional charge; Kryptonite will provide you with your combo info should you forget it
  • Limited lifetime warranty offered by the manufacturer


View all Kryptonite Chain Locks

Technical Specs

Best Use


Lock Style

Chain Lock

Lock Type

Combination Lock

Lock Thickness (mm)

9.5 millimeters


3T manganese steel


Length: 35 inches




5 lbs. 13.6 oz. pounds

11 reviews with an average rating of 3.7 out of 5 stars

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