The abus granit x plus 540 d lock as secure as fort knox is built with a sold secure gold rating which replaces the legendary x plus 54 with a more stylish look while retaining its safety features the parabolic 13mm square section shackle is massively resistant to cropping and twisting so you know your bike will be completely safe when leaving it in a high theft risk area the abus lock is securely held in place with the powercell double locking mechanism that offers the highest protection a