The modern Trelock frame lock series Protect-O-Connect now includes the new RS 453 Protect-O-Connect, featuring Trelock Security Level 4. This means high security for your bicycle. It is equipped with the new Trelock IN-X inner cylinder and a child safety feature. Weighing around 650 g, the frame lock is very lightweight and impresses with its elegant, compact design. The Trelock RS 453 is available for balloon tires and can be optionally combined with Trelock additional chains and cables.

The reversible key offers high pick resistance, and the security level 4 protects against professional thieves. The locking system is a key lock. The holder provides mounting options on the frame. The locking cylinder is an IN-X inner cylinder, and the lock features corrosion protection. Included are Vario plates ZR 20 (Ø 13 - 22.5 mm), providing basic security against theft.