Belt drives have many advantages over traditional timing chain sets. Today's belt drives are much stronger and last much longer than early versions. New materials are being used in the belt to prolong its life giving you more passes or laps before changing it. Many of the top circle track teams use belt drives. Belt drives also offer accurate timing with many belt drive systems offering easy camshaft timing changes without removing the belt drive timing cover. Because a belt is connecting the crank pulley with the camshaft pulley, you will not get the harmonic vibration transfer that you can get with a timing chain or gear drive.