As part of the Ultegra R8000 series

Plugs and End Tape Included

connection indicator LEDs indicate if the trainer is powered and connected with a device via ANT+ or Bluetooth Smart (BLE)

Handsomely detailed design adds beauty to any bike

Wolf-Tooth 104-4 BCD Single Chainring 30 pickuponly As part of the UltegraFeaturing the proprietary mud clearing Drop Stop tooth design, these rings are designed to fit any 104 BCD crankset. Made in Minneapolis, MN with exceptional chain retention in mind, these chainrings are best paired with a clutch style rear derailleur. For use with 104 BCD cranks Made from 7075 T651 Aluminum Features Drop Stop Tooth Design: Narrow wide tooth profile 30T chainring is threaded and has a 48 mm chainline. All other rings have 50mm chain