Fits 70 mm to 100 mm bolt pattern.
These easy-to-install products precisely, continually, instantly and dynamically self adjust to imbalance because equilibrium is necessary for a smooth ride! The secret is in the ring and fluid mercury that uses the natural forces of centrifugal force and gravity to reduce vibration and create better handling in a very simple, yet effective way. Balance Masters are patented, designed, manufactured and distributed in the United States.