The perfect combination of a frame lock, plug-in chain, and high-quality saddlebag! With the RS 453, Trelock offers cyclists and e-bikers a frame lock with a wide opening – 72 mm to be precise. The overall size, however, remains pleasantly compact. In terms of security, the RS 453 scores well, with a rating of 13 out of 18. Combined with the TRELOCK ZR 355 plug-in chain, it provides additional security by locking the bike to a fixed object. When not needed during the ride, the chain can be safely and easily stored in the high-quality, waterproof saddlebag. The frame lock is mounted either directly to the frame using the provided thread or flexibly with the included ZR 20 bracket.