The Qloc Security U16-250 U-Lock represents the ultimate in SRA-certified anti-theft protection for bicycles and e-bikes. With its maximum security rating of 10/10 and construction in high-resistance hardened steel, this U-lock positions itself as the lightest in its class with SRA Class certification, offering the perfect balance between absolute security and portability. Ideal for protecting your electric-assist bicycle or any high-value cycle in high-risk urban areas, it meets the strictest insurance company requirements and guarantees compensation in case of theft.

SRA Certification: The absolute reference in security

The SRA Class certification constitutes the most demanding label on the French market, recognized and often required by insurers for high-value bicycles. To obtain this certification, the U16-250 underwent a battery of destructive tests conducted by CNPP (Centre National de Prévention et de Protection), a Cofrac-accredited organization, reproducing real attack techniques: manual and electric sawing, bolt cutters, drilling, picking, prying with crowbar, and impact resistance. Only locks capable of resisting any type of attack for at least 10 minutes obtain this seal of approval. The certification is accompanied by annual production audits and regular sampling, guaranteeing consistent quality over time.

Multi-layer security architecture

• 16 mm diameter hardened steel shackle: Maximum dimension offering exceptional resistance to sawing and bolt cutters, while allowing easy securing to urban fixed points (posts, bike racks, barriers).
• Patented anti-rotation device: In case of sawing attempts, the shackle remains attached to the lock body and rotates on itself, doubling the time required for cutting and discouraging thieves.
• Double hardened steel locking mechanism: Both ends of the shackle are locked in the body (double deadbolt system), making picking and forcing extremely difficult and providing double security for your bike.
• High-security 7-disc cylinder: Advanced anti-picking technology resisting fraudulent opening attempts by picking or bumping, offering thousands of possible combinations.
• Passivated hardened steel body: Monoblock construction guaranteeing maximum structural rigidity and optimal resistance to impacts, twisting, and forced removal attempts.

Ergonomics and premium finishes

• Matte black protective sheath: Complete shackle coating preserving paint and frame surfaces from scratches and impacts during daily locking.
• Reinforced ABS end caps: Protections at shackle ends preventing any metal-to-metal contact with the frame, for increased durability of your bicycle.
• Dust cover on key passage: Integrated cylinder protection against weather, dust, and moisture, ensuring smooth operation even after years of outdoor use.
• Reversible shackle: Can be inserted in either direction, facilitating quick attachment in all urban configurations.
• Optimized dimensions 85 x 250 mm: 250 mm length allowing you to attach both frame AND rear wheel to a fixed point, while remaining compact enough for easy transport.

Service and manufacturer warranty

• 3 reversible milled keys included: Intuitive use without worrying about insertion direction, with spare keys to compensate for any loss.
• Exclusive code-based duplication service: In case of key loss, order duplicates from Qloc Security using the unique code engraved on your lock, without having to change the entire system.
• 10-year manufacturer warranty: Qloc Security guarantees the mechanical reliability and manufacturing quality of the U16-250 for a decade, demonstrating the manufacturer's confidence in its product.
• French manufacturing: Design and quality control carried out in France, ensuring complete traceability and recognized expertise in anti-theft security.

For whom and for what uses?

The Qloc Security U16-250 U-lock is specifically recommended for: owners of electric-assist bicycles (e-bikes) whose value justifies maximum protection, urban cyclists parking in high-risk theft areas (train stations, city centers, university campuses), daily users of high-end city bikes, cargo bikes, or speed bikes, and anyone whose insurance requires an SRA-certified lock to validate theft coverage. With its weight of 1.75 kg, it remains reasonably portable in a bag or attached to the frame, while offering maximum deterrence thanks to its imposing diameter and professional finish.