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.
i got a power meter SJ and wondering is there anyone out there knows hot to install this thing... i bought this secondhand but there is no manual for it... i've tried the "www" but there is only...