Shimano Dura-ace SM-RT900 Disc Rotor Centerlock

Shimano Dura Ace SM-RT900 Disc Brake Rotor
Shimano Dura Ace SM-RT900 Disc Brake Rotor Ice Tech rotors providing consistent braking performance through energy control, using revolutionary stainless steel / alloy 3-layer sandwich construction that manages heat while riding.
Through the larger adapter between brake surface and cooling fins, the heat reduction has been improved of 30degree in comparison to the Ice tech Freeza Rotor