The ROADLOK XRA-100 series fits motorcycles with 100mm brake caliper bolt spacing, the most common size on European performance and adventure bikes. It mounts permanently to your caliper, so your lock is always on the bike and ready in seconds.

To find your size, measure the distance between the centres of the two bolts that hold your front brake caliper to the fork. 100mm calipers are found on Ducati, KTM, BMW, Aprilia, Triumph and Harley-Davidson models, among others. The XRA-100 comes in left and right versions with a dedicated BMW and Harley-Davidson mounting option, and the XRA-C100R is designed for select Honda 100mm radial calipers.

Not sure? Use our fitment checker, or browse 80mm and 108mm disc locks.