A little blast from the past. Back a zillion years ago in my 2 stroke days the common synonym for Weisco was Seizeco. The company has since improved their product line in both design and quality and I'm currently running a set in my 1970 Kawasaki triple. They are noisy on start up but settle down and function well when the motor is up to operating temps....no complaints here. People do occasionally approach me saying things like "Sir, it looks like your engine is burning oil." I politely thank them and ride on.