Chainring 1-speed narrow-wide ROUND for Shimano 110 BCD Asymmetric Dura-Ace R9100, Ultegra R8000, 105 R7000

Basic price 83$

Clear Variable


  • Offset: 38T-54T  3,0mm; 56T-58T  2,0mm; 60T-62T  1,0mm

  • Diameter: 38T- 161,3mm; 40T- 171,0mm; 42T- 179,0mm; 44T- 187,0mm; 46T- 195,5mm; 48T- 202,4mm;                 50T- 210,4mm; 52T- 219,0mm; 54T- 227mm; 56T- 235mm; 58T- 243mm; 60T- 251mm; 62T- 259mm

  • Technology: Narrow Wide

  • Material: Aluminum 7075-T6

  • Made: CNC milling

  • Surface coating: Anodizing



  • For Shimano cranks with 110 mm Asymmetrical bolt circle diameter (4-arms): Dura-Ace R9100, R9120, R9150, R9170; Ultegra R8000, R8020, R8050, 8070; 105 R7000, R7020, R7070 and Dura Ace 9000; Ultegra 6800; 105 5800; Tiagra 4700

  • Chainrings you may use the following chains: all 10sp, 11sp, 12sp Shimano; 10sp, 11sp, 12sp SRAM; Campagnolo; KMC chains, (not compatible with SRAM Flattop chains)



ALUGEAR chainrings are some of the lightest chainrings on the market. Using our experience and vigorous testing, we tweaked the arm design and strategically machined the chainrings so that only minimal sacrifices were made in impact strength in exchange for large gains in weight reduction

The chainrings are CNC machined from 7075 T6 aluminum and hard coat industrially anodized to provide protection from mechanical impacts, a good look, and an excellent tactile feel to each of the chainrings that lasts a long time
A unique tooth profile eliminates chain noise, reduces wear, and provides smooth operation on the entire system of all the most common combinations, such as 10, 11, and 12-speed drives

ALUGEAR chainrings are the best choice if you are looking for a technologically sound chainring with a unique design and low weight



  • Use chainring bolts and nuts for mounting:  8mm bolts are required

  • We recommend use of a clutch system rear derailleur for the best chain security

  • It is also a good idea to use a new chain with your new ALUGEAR chainring



38T, 40T, 42T, 44T, 46T, 48T, 50T, 52T, 54T, 56T, 58T, 60T, 62T


Black, Blue, Gold, Green, Orange, Purple, Red, Silver

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