They rotors work really well.. just bolt them on and go.. I'm running these rotors with some copper pads.. in snow packed trails even when wet phenomenal braking..

These rotors are completely different than the stock ones. No instructions on which way to install the. I installed the first one backwards. I had to take off and turn the rotor around so the indent on the rotor is facing inward and the flush side is facing the wheel. I cannot comment on the performance as I only put 10km on them as it will take awhile to break them in. Put the quality seems really good.