Trelock Ring Lock RS 561 ART2 Box (18)

Unrivaled Security for Your Urban Ride.

Protecting your bike against theft demands cutting-edge technology and uncompromising strength. The RS561 ring lock delivers exactly that with its robust 8.5 mm hardened steel shackle engineered in a square profile to resist bolt cutters and saw attacks. A unique self-locking mechanism activates instantly upon tampering, securing the shackle firmly within the lock housing — a game-changer when it matters most.

Designed for maximum stability, the lock features a fully welded steel shell that eliminates vulnerable side access points common in riveted designs. Seamlessly compatible with TRELOCK’s plug-in chain system, it allows you to secure your bike effortlessly to fixed objects with enhanced convenience and safety. The package is completed by a newly developed high-security cylinder boasting asymmetric milling, protected recesses, and advanced coding technology that virtually nullify unauthorized opening attempts.

Key Features

• Square 8.5 mm hardened steel shackle for superior cut resistance.
• Self-locking shackle mechanism that activates upon manipulation.
• Fully welded steel housing for maximum structural integrity.
• Eliminated side access points to prevent tampering.
• Compatible with TRELOCK plug-in chain system for added security.
• High-security cylinder with asymmetric milling and advanced coding.
• Urban-proof design built for demanding cyclists.

Technical Specifications

• Shackle thickness: 8.5 mm hardened steel.
• Shackle shape: Square profile for enhanced resistance.
• Lock housing: Fully welded steel shell, no rivets.
• Locking mechanism: Self-locking shackle on manipulation.
• Compatibility: Fully compatible with TRELOCK plug-in chain system.
• Cylinder: Newly developed high-security cylinder with asymmetric milling, protected recesses, and improved coding technology.
• Inner diameter: 72 mm.

Frequently Asked Questions