Shimano EW-SD 50 Electric Wire, BLACK Bike Accessories Brand_Prologo PEARL iZUMi recommends these tights

PEARL iZUMi recommends these tights for use in temperatures ranging from 45-55°F

and reliability

KEEPING IT SIMPLE

the G23 is the lightest 700c tubeless rim ENVE produces

Chain KMC Z-series 1/2 x 3/32"

Shimano EW-SD 50 Electric Wire, BLACK Bike Accessories Brand_Prologo PEARL iZUMi recommends these tightsShimano E Tube wires and connectors Frame grommets for E tube internal wiring compatible frames are sold separately, see Shimano Frame Grommet Kit Electronic Shifter Extra Parts Ultegra Di2 wires utilize Shimano's e tube technology; e tube is a two prong system and is NOT cross compatible with Dura Ace 7970 Di2 wiring All e tube wires may be used for internal or external applications