Just as heavy as the stock rotor but a plus is the drilled rotor helps with heat under braking
It was a direct fit for my bike, no shims, adaptors or separate bolts needed. I purchased this to replace the solid rear rotor on my Electra Glide which is covered by the saddle bag so I wanted a drilled rotor to help with the heat from braking. You will most likely to apply heat to the bolts to remove the old rotor as they are securely mounted with thread lock and do not come off easily, but once that is done, this rotor bolts right up to the hub with no issues or clearance problems with a stock caliper.