If you keep this in a secure location, you can have a new key manufactured for you in the terrible case that you lose all of your keys. These include Channel Islands, isle of wight, isle of man, northern island and Scottish highlands.
eBay
Motorcycle Helmet Lock Anti-Theft Bicycle Helmet Security Locks with 2 Keys and Installation Tool
Aliexpress UK
Suitable for Bikes, Electric Bike, Motorcycles,Scooter, Car, Trailer, Luggage, Doors and Windows -USB Rechargeable -Loud alarm & Adjustable Volume,Up to 110dB loud alarm, 3 lever adjustable volume -Vibration alarm, 7 level sensitivity adjustable -IP54 waterproof -Remote control, easy to find your vehicle by 3 kinds of bells -Easy to install & use: Super easy installation by pasting with double-sided sticker or tying it with strap and Bracket -DIY pair Alarm Battery:4.2V 700mAh lithium battery Working Time(Alarm) :1~3 months,standby time 6 months Alarm Charge Port : Standard USB-C 5V Remote Battery : 27A(12V) Alkaline battery Working Time(Remote) :1~2 years（5 times per day) Working Frequency:433.92MHz Working Environment Humidity ： <80% Warranty: 2-year.
eBay
Anchtek Motorcycle Disc Lock Alarm USB Rechargeable 120db Bicycle Anti-theft Padlock Security Protection Motor Bike Accessories
Aliexpress UK
This layer adds to the lock's durability and ensures that both the lock and your bike maintain their aesthetic appeal without compromising security. Robust Cut-Resistant Construction: Built with thickened security in mind, our bike U lock features a heavy-duty zinc alloy, A3 steel, and a PVC and PP shell.
eBay
Heavy Duty Motorcycle Chain Lock Metal Anti Theft Bike Lock with 2 Keys for Maximum Security and Reinforcement of Bicycle
Aliexpress UK
A very effective deterrent for bike thieves is the disc lock for motorbikes produced by Oxford Monster. a variety of colours are available. 11mm hardened Ni-Cr-Mo alloy steel shackle. Motorcycle Disc Lock Features:-.
eBay
Heavy Duty Motorcycle Chain Lock Metal Anti Theft Bike Lock with 2 Keys for Maximum Security and Reinforcement of Bicycle
Aliexpress UK
1 x Motorcycle scooter bicycle heavy duty chain lock. A professional quality Heavy Duty Chain and Pad Lock;. The chain is 1.2m in length;. Suitable for a wide range of other security applications;. Main Color:black.
eBay
Motorcycle Chain Lock with Lighter Weight and Stronger Security Anti-Theft Bicycle Lock for Road Mountain Bikes
Aliexpress UK
It has excellent corrosion resistance, rust-proof, wear resistance, aging resistance, and It is not easy to break and deform, waterproof and sun protection, not afraid of sun and rain, long service life.
eBay
Motorcycle Helmet Lock Anti-Theft Bicycle Helmet Security Locks Hanging Hook with 2 Keys For Harley 7/8" to 1-1/4" 25-32mm Dyna
Aliexpress UK
1 x Anti theft Alarm Disc Lock. 1 x Disc Lock Reminder(150CM x 4MM Fits Between Handlebar Lever And Fitted Disc Lock ). 1 x Allen Key.
eBay
Universal Bike Lock Anti-Theft with 2 Keys for Bicycle Motorcycle Security Lock Steel Rope Cable Lockers
Aliexpress UK
Material: Metal & Plastic. Color: Blue. Package: 1pc of Wheel Rim Lock(Other accessories are not included). Size: As the picture show. Please attention: Due to manual measurement , there may be 0.1-0.3cm deviation exist,hope you can understand. Description: It stops the inner tube moving in the rim and tearing the valve. Protect against abrasion of inner tube. Easy to install. Fitment Rim width: 1.60"1.85" 2.15". About color: There are slight difference between the picture and the real item caused by light brightness,hope you can understand.
eBay
Universal Bike Lock Anti-Theft with 2 Keys for Bicycle Motorcycle Security Lock Steel Rope Cable Lockers
Aliexpress UK