The 16mm Shackle Oxford Boss Alarm has been independently tested and approved as Sold Secure Motorcycle Gold standard.
As well as being an extremely secure lock, it comes with a built-in alarm that is triggered by movement sensors; you can also lock it up without setting the alarm.
Reliability is assured by 5-year life-cycle testing (by Thatcham Research)
The removable, sealed unit alarm module is weather-proof against water, frost and heat, as well as vibration-resistant
Batteries Included (6 x LR44)
Very loud 100db alarm
Can be used with a chain to create the perfect chain lock 
Replacement batteries available separately x 6 (Oxford part number: OF229B)
Replacement alarm module available separately (Oxford part number: OF3A)
3 keys with a replacement key service - don't forget to note your key number and keep it in a safe place. In the unfortunate event that you lose all your keys, a new spare can be made up for you.
Scary thought: 25,000 bikes stolen a YEAR – 61% of these are UNSECURED! Lock It Up!
Top tip: Covering your bike will keep prying eyes off your pride and joy too.