Kryptonite Keeper 12 Standard U-Lock/D-Lock with 4 foot Kryptoflex cable

Our Take:

Looking for a secure, affordable lock for your bike or scooter? The Kryptonite Keeper 12 delivers solid protection in a compact, easy-to-use design. It includes an extra 4ft Kryptoflex cable for securing wheels or accessories and is Sold Secure Silver-rated, making it ideal for everyday use in moderate-risk areas.

Before buying, always check the U-lock size to ensure it fits your frame and locking location properly — too small or too big can reduce security and convenience.

Key Security Features

• 12mm Hardened Steel Shackle
  Resists cutting and leverage attacks.

• Double Deadbolt with Anti-Rotation Locking
  Resists twist-style attacks.

• High-Security Disc-Style Cylinder
  Reduces lock-picking risk.

• Sold Secure Silver Rated
  Certified moderate-level protection by Sold Secure.

• Police Preferred Specification
  Approved by Secured by Design, UK Police’s official security initiative.

Practical Design Details

• Cable Included:
  120cm x 10mm Kryptoflex cable with double loops — perfect for securing wheels or accessories.

• Transport Bracket:
  Easy click-style bracket for on-the-go mounting.

• Keys:
  2 stainless steel ergonomic keys to reduce torque stress and prevent bending/breaking.

• Key Safe Program:
  Free key replacement service by Kryptonite.

Product Specs

Why Choose the Kryptonite Keeper 12?

• ✅ Affordable yet trusted protection

• ✅ Bonus cable for securing more than just your frame

• ✅ Easy to carry and lock

• ✅ Perfect for daily commuting and city use

Fitment Tip

U-locks come in different sizes — be sure this one fits both your bike/scooter frame and the object you plan to lock it to. A snug, secure fit improves both ease of use and protection.