Rider Approved Designs introduces the Velocity featuring a new proprietary urethane to maximize roll speed. After two years of testingdifferent urethanes we found a high rebound formula that increased potential top speed with while still maintaining edge grip. At the center is the patient ‘Crown’ core ensuring a smooth slide. With three points and two valleys to section the wheel into distinct sections, chatter and vibrations are eliminated. Made out of material 10x stronger than traditional cores, the Crown doesn’t deform under weight.