Shimano brake disc SM-RT900 Centre-Lock for Dura Ace - especially for BR-R9170
The SM-RT900 brake disc was specially designed by Shimano for the Dura Ace BR-R9170 disc brake, but it is also compatible with other flat mount and even MTB brakes. The enlarged adapter between the braking surface and the cooling plates improves the heat dissipation from the disc surface by a further 40 °C compared to the Ice Tech brake discs.
Use the SM-RT900 brake discs with resin or with metal pads, just as you want.
- Spider anodized, disc polished, lock ring anodized (internal teeth)
- for brake pads with narrow pad shape
Diametre: - 160mm, 140mm
Material Disc:- Sandwich composite made of polished stainless steel on the outside with aluminum core
Material Spider:- Aluminum
Material lock ring:- Aluminum
Ice Tech FREEZA brake discs have even less fading due to 40 °C lower heat development compared to SM-RT98. The three-layer sandwich construction consists of stainless steel flanks and an aluminum core with integrated cooling fins. The two-part construction with the aluminum carrier dissipates the heat well. The dirt-repellent design extends the life of the disc and covering. The sporty, aggressive high-tech design is a real eye-catcher.