Xena XE15/XN15 Series Disk Lock Ultra-High Security High nickel-content stainless-steel construction, piercing alarm and polished good looks make the XN15 a remarkably effective way to protect your motorbike. Versatile and super-strong to fit right in with the finest motorcycle kit. Lock The XN15's unique double-locking, carbide-reinforced hardened-steel 14mm pin resists picking, sawing, freeze-spray attack and more. Alarm Shock motion sensors linked to a sophisticated microprocessor trigger a 110dB alarm. The unit is self-arming, with no on-off switch, and re-sets to armed mode within 15 seconds if the attack stops. Disc lock alarm designed to withstand all kinds of attacks Microprocessor controlled shock and movement sensors trigger a piercing 110dB siren High security key and barrel Detachable electronic module Double locking barrel system 14mm double locking pin, 7mm gap size and 62mm long Hardened steel and stainless steel body Motion and shock sensor SMART L.E.D. arming sensor Double locking barrel system