so this unit is not lighter either?

 

So if this is not any lighter and/or smaller in diameter it's basically there because it cancels out vibrations even better than the stock pulley so you guys can run the motor up to a higher rpm?

 

this is true . I have use before for my supra 2JZ engine . the ati damper so good . you can not compare to lighter pulley one . it's different . if you try you will know also . I try to order this damper for my evo 8 also .