XENA XX15 Disc-Lock Alarm and Chain Adaptor Review

by , RideApart

Can you accomplish near-total motorcycle security for around $200?

Well, that’s how much my setup costs and, at home or on the go, it locks my bikes to an immovable object, immobilizes a wheel and sounds a piercing alarm if the bike or locks are messed with. Read all about it in this Xena XX15 Disc Lock Alarm and Chain Adaptor review.

The full setup pictured here includes a Kryptonite New York Fahgettaboudit Chain ($100 on Amazon), plus the Xena XX15 Disk Lock Alarm and Chain Adaptor Combo ($100 on Amazon). We’re going to focus on the Xena products in this review.

The Gear
The XX15 is the biggest, strongest disc lock alarm in Xena’s range. The lock body is a very large, single piece of stainless steel with a large cutout that will fit around any brake disc, leaving plenty of room for the 14mm carbide steel locking pin to pass through.

Inside that stainless body is a motion detector powered by an included CR2 Lithium battery. If the bike or lock are jostled in any way, it gives you a few seconds of warning beeps before sounding a 120dB alarm. It’s as loud and as sensitive as any of the more-expensive alarms that install inside a motorcycle and is probably harder to defeat. There’s no way to unlock, open or even touch the XX15 without sounding the alarm and penetrating its stainless body will be exceptionally difficult.

You access the alarm module and battery by using a special tool (included) to slide a lever inside the base plate that will be totally inaccessible if the lock is clamped around a brake disc.

Addressing customer complaints that its previous disc lock alarms were too sensitive to certain environmental occurrences like wind and passing trucks, Xena has redesigned its alarm sensor to remove those variables without reducing its sensitivity to tampering.

The stainless steel chain adapter neatly slots into the disc lock without reducing the depth of its aperture. It can accept any security chains up to 14 mm in diameter and the shackles of those chains protects most of the Adaptor’s length, eliminating any potential vulnerabilities.




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