The Good: ~160mm rotor is a scant 99g
~Titanium bolts are just 7g total
~ No noise
~ Powerful bite, at lever pull
~ Alloy rotor hub carrier is a one large heat sink
~ Thick, standard 2mm steel rotor surface
~ Perforated surface effectively sheds water and heat
The Bad: ~ Not cheap, but true QUALITY never is!
After making hydraulic disc brakes for over a decade - Avid has finally collected all their years of research and race-inspired wisdom to produce what I call their finest rotor. The HSX is silent and stops on a dime. I realize there is lots of Avid hate out there....but this rotor simply does not warrant such product animosity.
Avid took an already fine-performing rotor(HS1) and increased its descending ability threefold. The new hub carrier acts as a huge heat sink and "floating" type rotor construction(ala' motorbikes) makes the disc stop with ruthless efficiency, under all conditions. End of story....