SHIMANO 110BCD R9200 R8100 (4-bolt AERO) Completely closed Round Narrow Wide Chainring

Model  42T or  44T or 46T or 48T or 50T or 52T or 54T or 56T or 58T or 60T Colour Black Made from 7075-T651 Aluminum Alloy Surface coating Anodizing Made with CNC milling Chainring shape Round Compatible cranksets SHIMANO  UT-R8100 D-A R9200 Weight, grams  99 (42T), 109 (44T),111 (46T), 132 (48T), 133 (50T), 159 (52T), 176 (54T), 196 (56T), 217 (58T), 234 (60T), Chain compatibility Standard 9/10/11/12 speed  Support paying an extra $10 to customize the same silver color  Bicycle shop or dealer contact customer service              PASS QUEST NARROW WIDE CHAINRING Our tooth height achieved 8.5 mm, Increased tooth height improves chain retention  Manufactured using 7075-T651 highly durable aluminum alloy The chamfering design can reduce the weight of the gear plate and make the gear plate more beautiful