With forged aluminum back with cooling pins and high performance organic compound. Suitable for the same range as D630 EXCEPT:
DEORE BR-M596/M595
ALFINE BR-S501/S500
XTR BR-M965/966/975
Deore BR-M765/775/655/ 665/585/535/M800/M975/T665
Alfine BR-S505
Hone BR-M601 comp. w. Tektro TRP DASH CARBON