Vibration can be determined with the formula: Acceleration in Meters per Second Squared. Different speeds, Variable RPM = Variable Waves of Frequency = Variable Swear Words . . . "Damn, my pinky fingers are numb ! " McFarland made me up these stainless handlebar vibration dampeners to smooth out very fine vibrations. The O-rings keep them snug - The threaded holes are for removal. Weight is 7.75 oz. each . . . According to my calculations? - (yet to be tested) Slick Daddy- O !