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} Increased thickness butyl rubber at the tubes crown resists punctures
Includes a chain gap tool that makes it easy to set up the correct chain length Rear Derailleur Mount Type 10x1 Standard Rear Der/Shifter Compatibility SRAM X-Actuation Cage Length Long Drivetrain Speeds 12 Color Lunar Chain Wrap Capacity (teeth) 42 Largest Cog 52
Auto trim functionality for rasp free running
Combine with handlebar for the lightest aero kit on the market
Shimano EW-JC130SS Di2 E-Tube Wire Y-Split 50/520/520mm CheckoutSpec=700x45 } Increased thickness butyl rubberShimano E Tube wires and connectorsFrame 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
