absoluteBLACK Premium oval subcompact road, 4x110BCD 30T - black Tool Kits UPC: 810191013587

UPC: 810191013587

UPC: 4718287313343

shock absorbing

Manufacturer Part Number: 16066

absoluteBLACK Premium oval subcompact road, 4x110BCD 30T - black Tool Kits UPC: 810191013587Innovative design allows very small chainring use on 4x110BCD cranks but a SRAM 12sp or Dura Ace 11sp chain is recommended Chainrings are sold separately but must be used in 30+46 and 32+48 combinations Special bolts are included for 30t and 32t inner rings so no additional parts are needed Inner and outer oval chainrings are optimized with smooth shifting in mind, (6) up shifting ramps (outer ring), and (12) dow shifting points (outer ring) Oval