VSR Pro 10™ High Torque (HT) Motor Magnets are the strongest compression molded motor magnets you can get at an affordable price. Pro 10™ magnets provide an increase in torque and RPM over stock Ceramic motor magnets. In addition to the increase in power these magnets also give the car more down force which allows faster cornering and better handling. VSR recommends using performance armature and aftermarket track power supply for best results. These are designed to fit the V1 chassis.