SHIMANO 110BCD R9200 R8100 R7100 Hollow Round Narrow Wide Chainring

Model 36T or 38T or 40T or 42T or  44T or 46T or 48T or 50T or 52T or 54T or 56T or 58T Colour Black Made from 7075-T651 Aluminum Alloy Surface coating Anodizing Made with CNC milling Chainring shape Round Compatible cranksets Shimano FC-R8100 - ULTEGRShimano FC-R7100 - SHIMANO 105 CRANKShimano FC-R9200 - Dura-Ace Weight, grams 51 (36T),63(.38T),76 (40T),78 (42T),187 (44T),196 (46T), 110 (48T), 121 (50T), 128 (52T), 142 (54T), 148 (56T), 158 (58T) Chain compatibility Standard 9-12 speed  Support paying an extra $10 to customize the same silver color  Bicycle shop or dealer contact customer service              PASS QUEST NARROW WIDE CHAINRING The R92-81-7100 chainrings are CNC milled from an entirealuminum plate, and the back is hollowed out and chamferedto ensure strength while also reducing the weight of thechainrings. The chainring adopts an elongated tooth shapewhich makes it difficult for the chain to escape fro