8 BOLT DYNAMIC ROTOR BOLT KITROTOR BOLT KIT INCLUDES 8 SOCKET HEAD CAP SCREWS, 8 WASHERS, AND 8 DYNAMIC MOUNTING T-NUTSDYNAMIC MOUNTING IS THE MOST EFFECTIVE METHOD OF ELIMINATING ALL TYPES OF THERMAL STRESS & DISTORTION IN STEEL ROTOR APPLICATIONSTHE T-NUTS FIT ROTORS THAT ARE MACHINED WITH MOUNTING SLOTS DESIGNED SPECIFICALLY FOR T-NUTSTHIS MOUNTING SYSTEM ALLOWS THE ROTOR TO EXPAND & CONTRACT INDEPENDENTLY OF THE MOUNTING HAT OR HUB AS THE ROTOR GOES THROUGH TEMPERATURE CHANGESTHIS ELIMINATES ALL STRAIN OR BIND AT THE MOUNTING POINTSTHE ROTOR RUNS TRUER, LASTS LONGER, & ALL UNDO STRESS ON THE HATS OR HUBS IS ELIMINATEDDYNAMIC MOUNTING IS PREFERRED IN ALL APPLICATIONS WHERE TEMPORARY, BUT EXTREME TEMPERATURE SPIKES MAY CAUSE HIGH EXPANSION RATES IN THE STEEL