Have you ever been to a concert or maybe a meet-and-greet session where there will be those fanatic-type fans which will go screaming their throats out upon seeing or even having a glance of their idolized star...
Guys, i was offered a full set of lighten pulley yesterday,....but my concern is "harmonic vibration" that can coz a huge RM later in the future....con rod sleeves, crank shaft bearing...etc.