Very happy with the lock, sold secure gold so insurance co is happy with it. Feels solidly built and as I got the silver one there is no paint to chip. The alarm gives peace of mind, and it can be simply disabled so won't go off when under the pillion seat. Fits the Brembo disc on my ZXR400 and OEM Nissin disc on the GSXR. USB3 port to charge the alarm instead of buying expensive lithium watch type batteries.