The Shimano Ultegra FC-R8000 11 speed chainrings are the perfect replacement for worn or damaged chainrings \n HOLLOWGLIDE, hollow outer chainring technology, giving vast improvements in rigidity and increased weight savings, whilst also removing outer chainring flex, hugely improving shift performance making it precise even under high load \n The teeth have been developed to work only in conjunction with 11-speed HG chains for improved contact providing more efficiency and improved power transfer \n Genuine Shimano replacement chainrings for the FC-R8000 cranksets available in 53T, 52T, 50T, 46T (Outer ring), 39T, 36T, 34T (Inner ring) \n Shimano part numbers: 53T-MW - Y1W898040, matches 39T-MW - Y1W839000, 52T-MT - Y1W898030, matches 36T-MT - Y1W836000, 50T-MS - Y1W898020, matches 34T -MS - Y1W834000, 46T-MT - Y1W898010, matches 36T-MT - Y1W836000 \n Compatible chain Shimano HG 11-speed \n \n \n \n Product Type \n Chainring \n \n \n Speed \n 11 Speed \n \n \n Discipline \n Road \n \n \n Discipline \n Time Trial & Triathlon \n \n \n Colour \n Grey \n \n \n Size \n 50 teeth \n \n \n Bolt Circle Diameter \n 110 mm \n \n \n Chainring Fitting \n 4 Arms
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