Zovii ZD10S review | Alarmed motorcycle disc lock test
By John Milbank
Consumer Editor of Bennetts BikeSocial
10.01.2025
Date reviewed: January 2025 | Tested by: John Milbank | RRP: £44.99| Weight: 622g | www.sportsbikeshop.co.uk
The Zovii ZD10S on review here is a very effective alarmed motorcycle disc lock. Sold exclusively in the UK by Sportsbikeshop, it’s a great value theft deterrent…
Pros & Cons
Very resistant to direct attack
Less chance of riding off with it fitted
Good price for an alarmed disc lock
Has the same vulnerability as most disc locks
Size and weight
With a stainless steel body and 9.95mm diameter carbide-reinforced steel locking pin, the Zovii ZD10S weighs 622g with the battery fitted. It’s a fairly compact lock, though I’d not recommend carrying it in a pocket as it could cause injury if you fell on it. If you put it in a rucksack, please do wear a back protector, and try to ensure there’s some padding.
Three keys are supplied and the 120dB alarm arms with a single beep when you press the barrel down, then disarms with two beeps the next time. It is possible to get out of sequence, but it’s not a problem and after a few seconds the unit gives a long beep to confirm that it’s armed. After that, movement will set off five loud chirps before the siren sounds. It’s loud enough to be painful in an enclosed space, and to draw attention outdoors. Or of course to remind you not to ride off with it fitted.
The supplied CR2 battery is replaceable, and just requires a hex key that comes with it to pop out a set screw when the lock’s off the bike. It’s a bit of a fiddle, but replacement cells cost as little as £1.59 from Battery Station.
I left the ZD10S outside in rain and freezing temperatures for a month over Christmas and into the new year, also occasionally hosing it, and I’m pleased to report that the alarm module continues to work perfectly.
This lock isn’t to be confused with the £12 cheaper Zovii ZD10, which has a zinc alloy body and is less resistant to direct attacks.
Resistance to attack: lock picking
While some YouTube channels might make lock picking look easy, especially when selling the creator’s own tools, it’s not a method used in typical motorcycle thefts at all. The most likely method that thieves will use to defeat a quality disc lock like the Zovii ZD10S is to cut it or the brake disc with an angle-grinder, or lift the bike into a van.
To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.
Resistance to attack: drill
Due to a hardened steel, freely-rotating top plate in the lock barrel, I had no success when attempting to drill the Zovii ZD10S out.
To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.
Resistance to attack: hammer
Despite repeated blows with a lump hammer, the Zovii ZD10S suffered nothing more than some cosmetic dents. The siren also continued to sound during the attack.
Using prying techniques also failed, the double-locked pin keeping the front and rear together and reducing the leverage attainable on the ‘arms’ that wrap around the disk.
To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.
Resistance to attack: angle-grinder
The Zovii ZD10S can be cut with an angle-grinder, and while the process is quickened using the most suitable cutting discs and a quality grinder, it’s still relatively time consuming. It’s also slower than cutting the brake disc itself, which is something thieves will do at times.
To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.
Product: Zovii ZD10S
Weight as tested: 622g
Drill attack: PASS
Sledge hammer attack: PASS
Angle grinder attack: AVERAGE
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Zovii ZD10S review: Verdict
The Zovii ZD10S is a tough lock with the added bonus of an ear-piercing alarm to deter thieves and remind you it’s fitted. It’s got very good resistance to direct attacks, and as such is a useful security device for when you’re out and about, or in addition to other measures such as a chain and lock, cover etc.
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