SHIMANO DURA-ACE R9200 DI2 DISC GROUPSET The Shimano Dura-Ace 12 Speed Di2 Disc Brake full groupset is the pinnacle of Shimano technology. Dura Ace R9200 Di2 is the fastest ever electronic groupset and features wireless technology for a clean cockpit. For their benchmark 12-Speed Dura-Ace Di2 Groupset Shimano took cycling's fastest electronic shifting system and made it even faster. Utilising an exclusive wireless protocol to increase shifting speeds without sacrificing any of the precise, reliability you expect from top of the range Shimano drivetrains. The new R9270 shift levers act as a wireless command centre and feature all-new ergonomics for a more aero and comfortable approach. That translates to seamless shifting thanks to their HYPERGLIDE+ technology. The brakes have also been completely redesigned. The hydraulic disc brakes take Shimano SERVOWAVE technology while increasing pad clearance to reduce unwanted brake squeal. Key Features: Wireless Di2 Shift Levers for a cleaner cockpit with 1.5-2 year battery life Shimano's fastest ever Di2 electronic shifting Revised STI ergonomics HYPERGLIDE+ shifting technology drivetrain All-new SERVOWAVE braking systems 10% extra brake pad clearance Battery life of up to 1000km between charges Fully customisable via the Shimano E-TUBE app Total Weight (approx.): 2,364g The Groupset comprises of: ST-R9270-L/R STI Brake/Shift Levers (left + right) Wireless Di2 connectivity 2x12-speed Dual-Control lever Refined hood for improved ergonomics and aerodynamics Improved button access FC-R9200 - HOLLOWTECH II Crank Set - 2x12-speed Chainring combinations: - 52-36T; 50/34T; 54/40T CS-R9200 Cassette - 12-speed 11-tooth small cog for optimal efficiency Optimized “Sweet Spot” Gears for pedalling efficiency Compatible with 11-speed freehub bodies 11-30 and 11-34T cassettes RD-R9250 Rear Derailleur SHIMANO SHADOW Rear Derailleur Integrated D-FLY connectivity 12-speed Di2 technology Compatible with 11-30 and 11-34T cassettes FD-R9250 Front Derailleur 12-speed Di2 technology Fast, precise front shifting BR-R9270 Brakes More fine-tuned control and heightened braking performance 10% wider pad clearance Easier bleeding process Shimano CN-M9100 Dura-Ace Road Chain with Quick Link Shimano Battery, Charging Cable and Electric Wires This groupset comes complete with a Shimano E-Tube SEIS Di2 battery, charging cable and EW-SD300 E-Tube Di2 Electric Wires. E-Tube SEIS Di2 Battery, 7.4V Lithium-ion, 3-ports for SD300 wires, internal mount EW-EC300 Charging Cable,1700mm EW-SD300 E-Tube Di2 Electric Wire, battery to front derailleur EW-SD300 E-Tube Di2 Electric Wire, battery to rear derailleur PLEASE NOTE, THIS GROUPSET DOES NOT CONTAIN: Bottom Bracket Disc Rotors