Kryptonite KryptoLok Standard U-Lock with FlexFrame Bracket (Sold Secure Gold)

Stop bike thieves in their tracks with the Kryptonite KryptoLok Standard U-Lock. Engineered for dependable everyday security in dense city environments, this premium D-lock boasts an independent Sold Secure Gold rating and an official Police Preferred Specification status. Fusing hardened performance steel with a rattle-free frame bracket, it delivers the ultimate balance of heavy-duty protection and effortless on-bike transport.

Core Benefits & Product Description

Lock up with absolute confidence. The Kryptonite KryptoLok Standard is built to withstand aggressive urban theft attempts, combining a 12.7mm max-performance hardened steel shackle with a cutting-edge hardened double deadbolt design. Unlike single-bolt locks that pivot open when cut once, this dual-locking mechanism anchors both ends of the shackle tightly, requiring thieves to cut the lock twice and providing massive resistance against prying and twist attacks.

Inside the core, a high-security, disc-style cylinder offers elite defense against lockpicking and drill attacks. Kryptonite hasn't just focused on brute strength, though—your bicycle’s aesthetics are completely safe thanks to a durable, protective vinyl coating that guards your frame against scratches. It also features an updated integrated dust cover to shield the cylinder from grit, rain, and road grime, ensuring smooth key operation season after season.

Carrying your lock is completely hassle-free. The included FlexFrame-U transportation system clamps easily to multiple tube locations on your bicycle, holding the 1.32kg D-lock firmly in place with built-in anti-rattle bumpers for a completely silent commute.

Key Features & Technical Highlights

• Sold Secure Gold Certified: Rigorously tested against physical attack techniques, meeting the high security thresholds mandated by most major bicycle insurance providers.
• Anti-Twist Double Deadbolt: A patent-pending dual-deadbolt locking architecture ensures unparalleled holding power, neutralizing leverage and twist-based tool attacks.
• Pick & Drill Resistant Cylinder: The high-security, disc-style lock cylinder is designed to defeat sophisticated lock‑picking tools and power drills.
• Secured by Design Status: Officially awarded Police Preferred Specification status by the UK Police Service's official security initiative.
• Ergonomic Stainless Steel Keys: Comes equipped with 2 ergonomic stainless steel keys engineered to reduce turning torque and prevent accidental bending or snapping.
• Key Safe & ATPO Programs: Eligible for Kryptonite’s Key Safe program (register for free replacement keys if lost) and optional Anti-Theft Protection Offer (ATPO) coverage up to £1,000.

Product Specifications

• Shackle Thickness: 12.7 mm hardened performance steel
• Dimensions: 10.2 cm x 22.9 cm (4” x 9”)
• Weight: 1.32 kg (2.9 lbs)
• Security Rating: 6/10 (Kryptonite internal scale) / Gold (Sold Secure)
• Bracket Type: Transit FlexFrame-U
• Number of Keys: 2 ergonomic stainless steel keys
• Part Number / SKU: GK002031