Bicycle Lock Chain – Folding Anti-Theft Hamburg Style Steel Lock with Mounting Bracket & 3 Keys

Price range: $55.00 through $90.00

Protect your ride from urban theft with our Bicycle Lock Chain—a heavy-duty, innovative Hamburg-shaped folding security system engineered for maximum protection and easy transport. Built with 3mm hardened steel chain blocks encased in a tough zinc alloy and scratch-resistant ABS shell, this folding bicycle lock chain delivers military-grade resistance against cutting, picking, and drilling tools.

⚡ Key Performance Highlights:

  • Hardened 3mm Steel Chain Blocks: Reinforced joint blocks resist bolt cutters, leverage tools, and sawing attempts.
  • Anti-Drill Lock Cylinder: Specialized cylinder design prevents lock-picking, drilling, and mechanical tampering.
  • Compact Hamburg Folding Design: Folds into a neat 585mm perimeter body that mounts cleanly onto your bike frame.
  • Complete Mounting Kit Included: Comes with 3 high-grade steel keys, quick-release frame retainer, hex wrench, and mounting screws.
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Description

Maximum Anti-Theft Security: Folding Bicycle Lock Chain

Don’t leave your valuable bicycle vulnerable to theft. The CycleAddons bicycle lock chain introduces an engineered “Hamburg-style” folding structure that combines heavy-duty physical defense with unmatched portability. Crafted from ultra-durable zinc alloy with 3mm hardened steel plates, this lock folds tightly into a sleek, compact shell that stores neatly on your bike frame without rattling during your ride.

Why Cyclists Trust This Folding Chain Lock:

🔒 3mm Hardened Steel & Zinc Alloy Defense
Engineered with 4 interconnected chain blocks reinforced with 3mm heat-treated hardened steel plates. The outer zinc alloy shell is wrapped in high-impact ABS resin to shield your bicycle’s paint job from scratches, chips, and wear.
bicycle lock chain hamburg style compact folding anti theft lock

🛡️ Anti-Drill & Pick-Resistant Lock Cylinder
Features an advanced anti-drill locking cylinder designed to defeat picking tools, power drills, and mechanical intrusion methods. Includes 3 precision-cut high-grade steel keys so you always have spares at home or work.
hardened steel chain blocks and drill resistant lock cylinder for bikes

🚲 Innovative Hamburg Folding Design & Frame Bracket
Unlike bulky U-locks or heavy traditional chains, this folding lock collapses smoothly into a burger-like puck shape. The quick-release mounting bracket easily attaches to your bicycle seat post or frame tubing for noise-free carrying.
compact folding bike lock mounted on bicycle frame bracket

Technical Specifications Matrix

Detailed dimensions, materials, and hardware specifications:

Feature / PropertyTechnical Specification
🛠️ Primary MaterialsZinc Alloy Housing + High-Impact ABS Coating
Chain Block Material3 mm Heat-Treated Hardened Steel Plates
Lock Cylinder TypeDrill-Resistant & Pick-Proof Cylinder Structure
Key Material & QuantityHigh-Grade Steel (3 Precision Keys Included)
Lock ColorMatte Tactical Black
Unfolded Lock Dimensions585mm x 70mm x 50mm / 23.03″ x 2.75″ x 1.96″
Package Dimensions200mm x 150mm x 100mm
Full Package Contents1x Burger Lock, 3x Steel Keys, 1x Quick Release Locker, 1x Retainer Seal, 1x Hex Wrench, 2x Plastic Screws

complete bicycle lock chain mounting kit including keys and bracket hardware


💡 Installation & Usage Recommendations:

  1. Frame Bracket Mounting: Use the included hex wrench and plastic screws to secure the quick-release locker retainer seal directly onto your bicycle bottle cage mounts or frame tube.
  2. Locking Position: Unfold the chain plates and loop through both your bicycle frame and a fixed steel bike rack or post to prevent lift-away theft.
  3. Key Care: Keep your spare keys in separate secure locations so you always have access if one key is misplaced.

Frequently Asked Questions (FAQ)

How long is the lock when fully unfolded?

The lock extends to 585mm (23.03 inches), providing optimal length to secure your frame and wheel to standard bike racks and posts.

Will the lock scratch my bike’s paint?

No. The outer body and chain links are fully encased in protective ABS rubberized plastic specifically designed to protect your frame finish.

Can I attach the bracket if my bike doesn’t have bottle cage holes?

Yes! The included retainer seal kit allows you to mount the bracket securely onto various frame tubes using the provided mounting hardware.

SECURE YOUR RIDE WITH PREMIUM LOCKS FROM CYCLEADDONS

Ride with total confidence knowing your bike is shielded by hardened steel folding tech. Compact, reliable, and built to last.


💥 SPECIAL OFFER: PREMIUM FOLDING ANTI-THEFT PROTECTION

Click Add To Cart today to lock in special pricing at CycleAddons.com!

Additional information

Weight1.44 lbs
Dimensions200 × 150 × 100 in
Color

Coded Lock, Deep black, Gray, Key lock, black

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