Motorcycle Helmet Lock-Master Lock #99KA - 2 Keyed Alike
Quick take
The Master Lock #99KA is a cable-style helmet lock set meant to deter opportunity theft and keep your helmet secured when you cannot bring it with you. Buyers describe it as easy to attach to common bike points and useful for everyday errands, though it should not be treated as a serious cut-proof anti-theft solution.
Pros and cons
Pros
- Two keyed-alike locks (one key can operate the pair), which adds convenience for riders.
- Simple cable design that’s easy to attach to many frame locations.
- Rubbery-lined cable helps reduce worry about marking a helmet surface.
- Long-enough cable for practical securing in “quick stop” scenarios.
Cons
- Not designed to stop determined tool-based theft (expect it to deter casual or opportunistic grabbing).
- Fit depends on helmet and routing, so some full-face helmets may require alternative cable paths.
- If your rides often allow you to bring the helmet with you, the lock may be unnecessary.
What buyers think
Buyer-review evidence is consistently focused on usability and the lock’s role as a deterrent rather than a fortress. Reviews commonly highlight that the locks are easy to secure to the bike, work well for short-stay situations like restaurants, the gym, and errands, and make it easier to leave a helmet on the motorcycle without worrying it will be knocked away. Several comments also point out that the keyed-alike design is convenient for two riders or when you want one key to manage the pair. A recurring theme is that the cable-lock format is unlikely to defeat a serious attack, but it can still make theft slower and less convenient for would-be opportunists.
How the Master Lock #99KA works for real-life helmet security
This is a cable helmet lock kit, using a keyed lock mechanism and a flexible cable you route to hold the helmet in place. In practice, that means the #99KA is best viewed as a “behavior deterrent” for everyday parking: it makes grabbing a helmet less effortless, and it can help keep a helmet from being jostled off your bike when you are away from the seat.
Keyed-alike convenience for one rider, two bikes, or shared rides
The set includes two locks with keyed alike operation, along with four keys. That is especially handy if you ride with a partner and want both locks controlled by the same key, or if you keep one lock for a secondary bike and want the same key to manage both. It is also useful when you want a backup lock for occasional use.
Cable routing and helmet fit: the main variable
Because this is a cable design, how you route it matters. Some riders note that standard routing may not fit every full-face helmet opening, leading them to secure the cable through other points (for example, routing around strap-retaining hardware). If your helmet’s shape or padding makes routing awkward, you may need to experiment to find the most secure and practical path.
Protection expectations (and what to do if you need more)
Buyers generally frame the lock as effective for preventing opportunity theft, not for stopping a determined thief with the right tools. If you routinely park in high-risk areas or you want stronger physical security, you may want to compare alternatives that offer higher resistance (for example, locks designed with heavier-duty mechanisms) or use an approach that removes the helmet from the bike when possible.
Who should buy the Master Lock #99KA helmet locks?
- You park in relatively normal-to-secure areas and want a practical way to leave your helmet on the bike during quick stops.
- You want keyed-alike convenience for two locks, such as for two riders or two bikes.
- You prefer a simple cable lock that is easy to mount to common frame points.
- You want to reduce “helmet knocked over or moved” scenarios as much as possible.
Who should avoid (or consider a different approach)?
- You need serious tool-based theft resistance, or you park where determined break-and-grab theft is a real concern.
- Your helmet’s design makes cable routing difficult, and you are not willing to adjust how you secure it.
- You frequently store your helmet with you (locker, trunk, indoors) and do not need a lock most days.
Pros and cons recap
- Best for: everyday convenience and deterrence, especially for short unattended parking.
- Main tradeoff: it is not meant to withstand major cutting or forced attacks.
- Convenience factor: keyed-alike operation across the two-lock set.
- Fit factor: routing depends on helmet shape and where you secure the cable on the bike.
Price and availability
Check current pricing and availability before you buy, since accessory bundles like this can vary by retailer and stock. If you only need one lock, buying a keyed-alike set may be more than you need, but it can be convenient if you share rides or want a backup.
FAQs
Is the Master Lock #99KA good for securing a helmet if you leave it on the bike?
It is built to deter opportunity theft and help keep your helmet secured during everyday stops. Buyers generally treat it as helpful for “quick park” scenarios, but not as a lock that will stop a determined thief using tools.
Will the cable fit a full-face helmet?
Cable fit depends on your helmet design and how you route the cable. Some riders find that common routing may not work for every full-face helmet opening, and they may route the cable through alternate points for a secure hold.
Is this set keyed alike?
Yes. The kit is designed so one key can operate the pair of locks, and it includes multiple keys with the set.
Where can I attach the lock on my motorcycle?
Buyers report it can be attached to many frame locations, since it is a cable-style lock. The best attachment point is the one that keeps the helmet firmly in place without making routing awkward.
Can it protect my helmet from being knocked off the bike?
That is one of the practical benefits. Several buyers mention using it specifically so the helmet stays put and is less likely to be knocked or moved while the bike is parked.
Specifications
| Product Title | Motorcycle Helmet Lock-Master Lock #99KA - 2 Keyed Alike |
|---|---|
| Category | Automotive > Motorcycle & Powersports > Accessories > Electronics > Alarms & Anti-Theft |
| Brand | Master Lock |
| Manufacturer | Master Lock |
| Model Name | Helmet Lock |
| Model Number | 99KA-2 |
| Color | Clear |
| Material | Plastic |
| Brand Name | Master Lock |
| Recommended Uses For Product | Securing motorcycle helmets |
| Number of Pieces | 2, 4, 5 |
| Included Components | 2 Motorcycle Helmet Locks and 4 Keys |
| Unit Count | 2 Count |
| Manufacturer Part Number | 99KA-2 |
| Additional Features | Key Lock |
| Lock Type | Key Lock |
| Controller Type | Hand Control |
| Control Method | Touch |
| Smart Home Compatibility | Not Smart Home Compatible |
| Style Name | Modern |
| Shape | Round |
| Material Type | Plastic |
| Finish Types | Gemalt |
| Item Dimensions | 4 x 6 x 2 inches |
| Special Feature | Key Lock |
| Item dimensions L x W x H | 4 x 6 x 2 inches |
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