Shimano Dura-Ace Di2 R9270 12V groupset - 50/34 D

Shimano Dura-Ace Di2 R9270 12V group, the brand new fastest and most modern racing bike group of all time. The new generation of racing bike components is completely speed-oriented, and every decision made by Shimano developers had one goal: to make you even faster. For this reason, Shimano technicians have reviewed every single component and function. This way, you can benefit from an optimal riding experience, whether you are racing on the Champs-Élysées towards your destination or climbing a steep hill on your home circuit.

• Dura Ace Di2 ST-R9270/BR-R9270 2 x 12 shift/brake unit: The new ergonomics of the DURA-ACE ST-R9270 Dual Control shift/brake lever offers a new level of comfort and control for road cyclists. Thanks to faster wireless shifting capability and even more precise brake force adjustment, DURA-ACE sets new standards in terms of performance. Now equipped with SERVOWAVE brake technology, the DURA-ACE ST-R9270 brake lever offers a level of control that is second to none. The wireless shifting ensures that the bike looks clean and allows for extraordinarily fast and precise gear changes. All of this is integrated into a dual shift/brake lever that, thanks to the use of state-of-the-art materials, is lightweight and ergonomic, ensuring optimal comfort and control even in difficult conditions. Thanks to the brand new design, the DURA-ACE BR-R9270 hydraulic brake caliper is more compact than ever. The monocoque construction ensures reduced weight and high rigidity, thus demonstrating that high performance is possible even with compact dimensions. With the brand new monocoque construction, the peak of high braking performance has now been achieved. The lighter BR-R9270 brake caliper offers a greater distance between the pads and reduces noise levels. Finally, a new bleeding process makes maintenance easier than ever.
• Dura-Ace Di2 RD-R9250 rear derailleur: With the fastest gear changes in the largest DURA-ACE gear ratio to date, Shimano's RD-R9250 rear derailleur opens up possibilities for victory or personal record opportunities. The DURA-ACE RD-R9250 rear derailleur has an integrated charging connection and a wireless signal transmission unit, allowing for super fast and precise shifting operations. With a single cage length, the shifting on cassettes goes from 11-28 to 11-34 teeth, further increasing the versatility of the world's best racing bike component group.
• Dura Ace Di2 FD-R9250 front derailleur: Despite its smaller and lighter construction, the DURA-ACE FD-R9250 offers the fastest front derailleur shifting function on the market. The fastest shifting is now even faster thanks to the DURA-ACE FD-R9250 front derailleur. Compared to the FD-R9150, currently the fastest front derailleur on the market, the new design with a weight of less than 100 grams ensures 45% faster shifts at the front. The frontal mounting surface of the FD-R9250 has also been reduced to decrease air resistance.

• Dura Ace Di2 Front Derailleur FD-R9250.
• Dura Ace Di2 Rear Derailleur RD-R9250.
• Dura Ace Cassette CS-R9200 11/30T.
• Dura Ace Di2 Brake Levers ST-R9270.
• Brake Calipers BR-R9270 1000mm/1700mm.
• BT-DN300 Di2 Battery.
• EW-SD300-I Electric Cable 1200mm x1/ 900mm x1.
• EW-EC300 Di2 Charging Cable.
• CN-M9100 12-speed Chain 126 links.
• Dura Ace FC-R9200 Crankset 50/34D 170mm/172.5mm/175mm.
• 2 MT-RT900 Brake Discs 160mm Center Lock.