Zovii ZD6 review | Alarmed scooter & motorcycle disc lock

Date reviewed: January 2025 | Tested by: John Milbank | RRP: £29.99| Weight: 552g | www.sportsbikeshop.co.uk

The Zovii ZD6 on review here is a 6mm scooter or motorcycle disc lock at the top end of the brand’s price range for this size of device. Despite the built-in alarm though, it offers a disappointing level of protection

Pros & Cons

Size and weight

The Zovii ZD6 promises a hardened steel body with a 6mm locking pin (which measures 6.10mm in diameter). Three keys are supplied, and securing it to the brake disc through one of the vent holes is simply a matter a pressing the barrel down. As you do so, the lock will either beep once to indicate that the built-in 120dB alarm is armed, or twice if it’s unarmed.

One CR2 battery is supplied, which costs as little as £1.59 to replace at Battery Station.

Swapping the battery requires the supplied hex key, and is a bit of a fiddle, especially putting the alarm module back in, but in my limited testing it did appear to stand up against water ingress caused by rain.

Once armed, if the unit detects movement or vibration it will give out five loud chirps. If the movement stops, it goes back into its armed standby state. If the movement continues, the piercing siren will wail for 15 seconds. It’s loud enough to draw attention outdoors and to be painful in a confined space.

Weighing 552g makes this the heaviest 6mm lock that Zovii offers, as well as the most expensive, but despite that, it’s not the strongest…

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. Brute force attacks are far more likely and in the case of this Zovii ZD6, much quicker and easier.

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

It took just three blows with the lump hammer to smash the ZD6 off the brake disc of my Triumph Tiger test wheel, and the alarm gave one very brief chirp before failing.

Using the right prying technique the area where it wraps around the disc snapped easily, and although the alarm did work in this case, it was only the initial five movement chirps. It could be either left on the ground to go back into standby or easily thrown away.

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

Both samples were destroyed in the hammer attack testing, so an angle grinder wasn’t used, however this method would be more time-consuming than hitting or prying the lock.

It’s important to also understand that the weak point of any device like this is the brake disc itself, which thieves will sometimes cut to be able to remove the lock and push the motorcycle or scooter away.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Bennetts BikeSocial test results

Product: Zovii ZD6

Weight as tested: 552g

Sledge hammer attack: FAIL

Angle grinder attack: AVERAGE

Zovii ZD6 review: Verdict

The Zovii range of locks (tested here) are relatively inexpensive, but this is the most expensive of them all. Sadly, the ZD6 is far from the strongest, being disappointingly easy to defeat with basic tools.

6mm locks are designed to be used on smaller brake discs like those on scooters as they pass through the vent holes, but you’d be far better investing in something tougher as the Zovii ZD6 offers little more than a deterrent to the most lackadaisical thief.

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