Motorcycle Disc Lock Alarm With Motion Sensor And 120dB Siren
This Disc Lock Alarm Keeps Your Bike Safe
This Product gives you instant peace of mind wherever you park. Fit it to your brake disc and a loud 120dB siren deters anyone from tampering with your bike. The motion sensor arms itself automatically, while a single USB-C charge keeps it running for up to six months of standby time.


A customer favourite — This Product combines a motion-activated 120dB siren with a tough aluminium body to give you real peace of mind wherever you park.
Popular choice with fast dispatch — Ordered today, dispatched within 24–48 hours.
Why You'll Love This Car Accessory
- Loud deterrent: The 120dB siren alerts everyone within earshot the moment someone touches your bike.
- Self-arming design: The motion sensor arms itself after five seconds, so you can walk away without a second thought.
- Rugged build: The tough aluminium alloy body resists cutting and break-in attempts, and the IP67 rating means it survives rain and puddles up to three feet deep.
- Long battery life: A single USB-C charge keeps the alarm running for up to six months, so you don’t have to worry about topping it up.
- Universal fit: The 0.27-inch hardened pin locks brake discs up to 6.1 cm (6.1 cm) wide, making it compatible with most bikes and motorcycles.
Perfect For
- Daily commuters The automatic five-second arming and USB-C charging mean you can lock up and go without fumbling for keys or cables.
- Overnight parking A 120dB siren and motion sensor watch your bike while you sleep, so you don't have to worry about it.
- Riders in all weather The IP67 waterproof housing stands up to rain and puddles, so the lock keeps working no matter the forecast.
Specifications
- Product type: Product
- Material: Aluminium alloy and zinc alloy
- Weight: 283.5 g
- Lock pin diameter: 0.69 cm (0.7 cm)
- Alarm volume: 120 dB
- Battery life: 6 months standby
- Water rating: IP67
- Best for: Motorcycles, scooters, e-bikes, mountain bikes with disc brakes
What's Included
- 1 x Product
- 2 x Keys
- 1 x Charging Cable
- 1 x Anti Theft Rope
Product With Motion Sensor And brings its strongest practical benefits into your everyday routine with less effort every day. Choose yours today and enjoy the difference.
The House of Nova guarantee
30-day returns
Shop with confidence. If your order is not right for you, you can request a return within 30 days of delivery in accordance with our return policy.
Why shop with House of Nova?
- 30-day returns
- Free tracked shipping
- Secure payment
- Helpful customer support
Free tracked shipping
Processing Time: 1–2 business days. Transit Time: 4–8 business days after dispatch. Estimated Total Delivery Time: 5–10 business days from the date the order is placed.
30-day returns
We offer a 30-day return period, starting from the date your order is delivered. The item must be unused, unworn, and in original condition. All original packaging, tags, and accessories must be included. A proof of purchase (order number or receipt) is required.
Secure payment
Secure checkout
Frequently asked questions
When will my order be shipped?
Processing Time: 1–2 business days. Transit Time: 4–8 business days after dispatch. Estimated Total Delivery Time: 5–10 business days from the date the order is placed.
Can I return my order?
We offer a 30-day return period, starting from the date your order is delivered. The item must be unused, unworn, and in original condition. All original packaging, tags, and accessories must be included. A proof of purchase (order number or receipt) is required.
What should I do if my parcel is delayed or lost?
Contact customer support with your order number so we can check the latest tracking information and help you with the next steps.
How can I track my order?
Once your order has been dispatched, you will receive a shipping confirmation email with a tracking link.
Is my payment secure?
Secure checkout
Which currency will I pay in?
For United Kingdom, current prices and checkout are displayed in GBP.
How can I contact customer service?
Email: support@houseofnova-london.com. Phone: +447311131410. Customer Service Hours: 08:00 – 18:00 (GMT). We aim to respond to all enquiries within 24 hours on business days.