Complete, boxed Shimano Dura-Ace Di2 groupset Everything you need for a new bike build or upgrade to the high performance Shimano Dura-Ace 12-speed electric drivetrain. Shimano Dura-Ace - The top spec drivetrain from Shimano, used by the pro's and found on the very best bikes. Lightning fast, smooth, reliable shifting. If you want to draw out all your potential, Dura-Ace will be your trusted ally. Shimano Di2 - The revolutionary Di2 shifting system solves the challenges drivetrains present to the power-delivery equation in cycling. Di2 gives you instant, accurate, lighting-fast shifts the first and every time, at the push of a button. Even in the most extreme conditions, shifting is precise and controlled. You can change gear even under heavy load while climbing or accelerating Due to the large amount of frame standards this kit does not include a BB All boxed components (not OEM parts) Parts included in box - FCR9200E26 - FC-R9200 Dura-Ace 12-speed double chainset, 52 / 36T CSR920012134 - CS-R9200 Dura-Ace 12-speed cassette 11 - 34T CNM9100126Q - CN-M9100 XTR/Dura Ace HG+ chain, with quick link, 12-speed, 126L, SIL-TEC R9270DLR - ST-R9270 hydraulic disc, Di2 E-tube STI set, flat mount calliper, left rear R9270DRF - ST-R9270 hydraulic disc, Di2 E-tube STI set, flat mount calliper, right front RDR9250 - RD-R9250 Dura-Ace Di2 12-speed rear derailleur E-tube FDR9250F - FD-R9250 Dura-Ace Di2 12-speed front derailleur E-tube, braze on, double RTMT900S - RT-MT900 disc rotor with internal lockring, Ice Tech FREEZA, 160 mm RTMT900SS - RT-MT900 disc rotor with internal lockring, Ice Tech FREEZA, 140 mm EWSD300IL075 - EW-SD300 E-tube Di2 electric wire, 750 mm, black EWSD300IL120 - EW-SD300 E-tube Di2 electric wire, 1200 mm, black BTDN300 - BT-DN300 Di2 internal mount battery, 3-port EWEC300 - EW-EC300 battery charging cable, 1700 mm