Shimano Dura-Ace 12-speed Di2 Disc R9270 road bike groupset

The Dura Ace 12x2-speed drivetrain and groupset with wireless disc shift-brake levers.

Contents of the Shimano Dura Ace R9270 Di2 Disc drivetrain and groupset:

• Shimano Dura Ace Di2 12-speed rear derailleur, RD-R9250
• Shimano Dura Ace Di2 front derailleur, solder-on mount, FD-R9250
• Optional Shimano front derailleur clamp, 34.9 mm or 31.8/28.6 mm SMAD91
• Shimano Dura Ace Di2 ST R9270 Disc STI, Dual Control shift lever, 2x12-speed
• Shimano Di2 EW-SD300 cable set, 2 pieces
• Shimano Di2 BT-DN300 battery, internal round
• Optional charger available
• Shimano Dura Ace BR-R9270 Flat Mount brake calipers
• Shimano SM-BH-90-JK-SSR disc brake hose, 100 and 170 cm
• Shimano small parts for assembly and cable trimming
• Optional Dura Ace RT-CL900 brake discs in 140 or 160 mm
• Shimano Dura Ace FC-9200 crankset in various sprocket combinations and lengths
• Optional Shimano Ultegra bottom bracket, SMBBR60 BSA or Italian thread or Pressfit BB86, or Wheels MFG bottom bracket for BB30, Pressfit30, BBright or BB386 bottom bracket shells
• Shimano Dura Ace CS-R9200 cassette, available in 2 gear ranges
• Shimano Dura Ace CN-M9100 chain

Shimano Dura Ace Di2 12x2-speed:

The components used by the pros: the high-end Dura Ace 12-speed series, crafted from the finest materials – titanium, carbon and aluminium. As a complete package, the Shimano Dura Ace R9200 Di2 groupset for rim brakes, optionally including bottom bracket, brakes and charging cable. The new Shimano Dura Ace Di2 R9200 series components: the high-end version of Shimano’s electronic road bike components. The 12-speed Di2 shift levers for rim brakes do not feature the wireless function and are connected to the battery via a cable.

The Di2 12-speed rear derailleur, with the additional wireless unit, is connected via cable to the battery, shift levers and front derailleur for power supply and shift signal transmission. Additional wireless components, including those from third-party manufacturers, can also be paired with the rear derailleur. Furthermore, the rear derailleur features a charging socket and a connection for diagnostic tools.

Shimano Dura Ace RD R9250 Di2 rear derailleur:

The new Dura Ace Di2 rear derailleur is the centrepiece of the new Di2 12-speed components. It provides the wireless functionality and connection for external components, includes the charging port, and replaces the previous SM-BCR2 charger. The rear derailleur also houses the transmitter for wireless communication with the STI shifters and other external devices, including those from third-party manufacturers. Furthermore, it features the status LED and the adjustment knob, which is used, for example, to switch between Synchro-Shift modes, meaning that the previous Junction A port, SM-RS910, is no longer required.

Precise, lightning-fast shifting at the touch of a button, in any situation. The Shimano Dura Ace Di2 RD R9250 rear derailleur is even more compact and lighter than its predecessor and features E-Tube connectors for extremely easy installation. Equipped with a crash mechanism that disconnects the link to the motor in the event of strong external forces to prevent damage.

Shimano Dura Ace FD R9250 Di2 front derailleur:

Lighter, faster and more aerodynamic: the Dura-Ace 12-speed Di2 front derailleur. Designed for chainring sizes ranging from 50/34 to 54/40 teeth, the new 12-speed Dura-Ace Di2 front derailleur operates even faster and more precisely. More compact and faster than ever before, the Dura Ace R9250 front derailleur delivers shifting with digital precision in all conditions. By combining Shimano’s new Di2 platform with the road bike version of Hyperglide+, the Dura Ace R9250 front derailleur shifts between chainrings as quickly and seamlessly as no other model on the market.

Shimano Dura Ace STI Di2 ST R9270 Disc Brake Lever:

The new Dura Ace ST-R9270 brake lever offers improved modulation and control on every ride thanks to Shimano’s proven Servo Wave technology. The Di2 Disc wireless shift/brake levers, with their new ergonomic shape, feature higher levers that are also slightly angled inwards. In addition, the clearance between the brake lever and the handlebars has been slightly increased to provide the optimal balance of comfort and control. Road cyclists will now be able to grip the new levers more securely and comfortably with their thumb and index finger, whilst the remaining three fingers can be positioned comfortably between the handlebars and the brake lever. However, thanks to adjustments and enlargements to the design of the shift buttons, these remain easy to reach from the lower handlebar position. Furthermore, the two shift buttons on each STI lever are now positioned at a greater height difference from one another, enabling more intuitive operation, particularly with wet, cold fingers or full-finger gloves. Additionally, the shift-brake levers feature classic cable connections for mounting additional shift levers.

Shimano Dua Ace Disc BR-R9270 brake caliper:

The BR-R9270 road bike disc brake calipers for the 12-speed Dua Ace groupset. These calipers are compatible with all Shimano disc brake levers. Recommended brake discs: RT-MT900. Thanks to the 10 per cent greater spacing between the brake pads, the brakes can be adjusted more effectively and noise is minimised.

The new Dua Ace BR-R9270 brake caliper offers improved modulation, a quieter braking system and an extremely simple bleeding process. The Dura-Ace R9270 disc brake caliper offers road cyclists a completely new sense of control thanks to its improved modulation and faster-engaging initial braking force. Despite its flatter design, the system produces less braking noise than ever before and is easier to maintain. The bleeding system has been redesigned and made significantly simpler.

Optional Dura Ace RT-CL900 brake discs:

The new Shimano Dura Ace RT-CL900 Ice Tech Centerlock brake discs, quieter control on any terrain. The lightweight brake discs, featuring heat-dissipating painted, protruding aluminium layer segments, deliver excellent cooling performance, consistent braking power and easier operation in all conditions. Quieter than ever before, yet with first-class, reliable braking performance on all long, steep descents thanks to excellent heat dissipation. When developing the new brake disc, the aim was to prevent heat-induced warping. The result is incredibly quiet braking performance without compromising on weight or heat dissipation.

Shimano Dura Ace FC R9200 crankset:

For the new Dura Ace 12-speed drivetrain, Shimano relies on tried-and-tested gear ratios with large sprockets and chainrings. The advantages include large chain wrap angles, which guarantee quiet and highly efficient power transmission and allow for finely graduated cassettes. The new 12-speed cassettes are also compatible with the older HG11 freehub bodies. Hollow-forged chainrings made from aluminium and carbon fibre-reinforced plastic, thin-walled hollow-forged crank arms and a reduction in the outer surface area reduce the weight of the new Dura Ace 12-speed FCR 9200 crankset. The design of the 2x11-speed Hollowtech II crankset ensures enhanced performance. As a key component in Shimano’s new 12-speed Dura-Ace series, the FC-R9200 crankset is characterised by Shimano’s signature shifting quality and power transfer efficiency. Redesigned for seamless 12-speed shifting, the Dura Ace crankset is available in lengths from 160 to 177.5 mm. This means greater performance and improved customisation options for smaller riders, triathletes and riders with specific biomechanical requirements.

Optional bottom bracket:

We offer optional bottom brackets from Shimano, Wheels Manufacturing and FSA for the Shimano Dura Ace Di2 groupset. This allows the crankset to be fitted to all standard bottom bracket shells.

Shimano Dura-Ace CS-R9200 cassette:

The Shimano Dura Ace CSR9200 cassette, featuring two large sprocket blocks and titanium sprockets on an aluminium spider, delivers Shimano’s outstanding smooth shifting performance combined with low weight and long-lasting durability. Shimano offers replacement sprockets for these cassettes. This means that if only a few are worn, they can be replaced cost-effectively.

The new Hyperglide+ cassettes set new standards for shifting, thanks to smooth gear changes across the entire gear range. Even when applying maximum force on climbs or sprinting to the finish line, riders no longer need to worry about changing gears. In all gears, the Dura-Ace R9200 drivetrain ensures maximum efficiency thanks to larger teeth. Despite their expansion to 12 speeds without adding weight, Dura-Ace CS-R9200 cassettes set new standards for road bike shifting systems.

The 12-speed cassettes are compatible with both the new HG12 and the previous HG11 freehub bodies. The new 12-speed freehub bodies feature finer teeth. This allows for a significantly better connection between the cassette and the freehub body.

Shimano Dura Ace CN - M9100 chain:

The Shimano chain for 12-speed road bike and MTB drivetrains. The special asymmetrical outer and inner links, combined with Shimano’s SIL-TEC surface coating, minimise friction, optimise performance and also reduce dirt build-up.

The chain is perfectly matched to the 12-speed Shimano chainrings with Dynamic Chain Engagement+ (DCE+) tooth profiles. The HG Plus chain has been completely redesigned and features even finer, precision-machined contact surfaces with the sprockets and chainrings, particularly on the inner links. Furthermore, the inner links are chrome-plated, making them even more durable whilst delivering outstanding shifting performance when shifting up or down.

Flat Mount Standard:

The new Flat Mount caliper standard for road bike brakes reduces weight and offers a significantly sleeker look. With the Flat Mount standard, the rear brake caliper sits directly on the chainstay; no adapter is required for caliper mounting. The bolts pass through the chainstay from below directly into the brake caliper. A flat adapter is still required on the fork. The adapter is screwed onto the rear of the fork leg, with the brake sitting directly on the adapter.

Synchro-Shift technology

Synchro-Shift technology greatly simplifies gear changes and significantly reduces the number of decisions that need to be made whilst riding. Particularly in crucial race situations or when riding at full throttle, riders often have to make a multitude of decisions alongside the physical strain, which are frequently disrupted and lead to wrong decisions. The fewer decisions there are to make, the better the decisions will be and the more attention can be focused on the race. This is precisely what Shimano Synchro-Shift technology enables, always selecting the optimal next-higher or next-lower gear combination, regardless of whether this requires shifting at the rear derailleur and/or the front derailleur.

Shimano Synchro-Shift functions

• Full Synchro-Shift: The front derailleur reacts to the shifts the rider makes on the rear derailleur. Essentially, this means that only one shifter with two levers is needed to operate both the rear and front derailleurs.
• Semi Synchro-Shift: The rear derailleur responds to the gear changes the rider makes on the front derailleur. The rear derailleur automatically performs the necessary compensatory shifting.

Shimano Di2 installation:

Installing Shimano Di2 components is almost easier than fitting traditional gear systems. The standardised cable connectors and the junction box ensure straightforward and quick installation. The shift levers are connected to Junction Port A on the junction box; a cable runs from Junction Port A to Junction Port B on the junction box, and from there the cables run to the rear derailleur, front derailleur and battery. The battery can be mounted externally on the bottle cage or internally in the seat tube or down tube. Frames specifically designed for this purpose are required for internal cable routing.

Compatible bottom bracket shells

There is now a wide variety of bottom bracket shells available on modern frames. Shimano only offers compatible bottom brackets for some of these. To ensure the Ultegera groupset fits all frames, we supply optional FSA or Wheels MFG bottom brackets for the bottom bracket shells for which Shimano does not offer bottom brackets. The Wheels Outboard bottom brackets are significantly more durable than standard press-fit bearings, as the cup halves are bolted together, ensuring they sit firmly in the frame. The Wheels bearings are available in various grades: ABEC3 standard bearings, angular contact bearings and ceramic bearings.

• BSA threaded housing, 68 mm installation width
  Shimano Dura Ace SM-BBR60B bottom bracket
• BSA threaded housing, 70 mm installation width
  Shimano Dura Ace SM-BBR60I bottom bracket
• Pressfit BB86 housing, installation width 86.5 mm, press-fit diameter 41 mm, Shimano
  SM-BB71-41B bottom bracket or Wheels MFG Outboard
  BB86-OUT bottom bracket
• BB30 shell, installation width 68 mm, press-fit depth 42 mm Wheels MFG Outboard
  BB30-OUT bottom bracket
• Pressfit 30 housing, installation width 68 mm, press-fit depth 46 mm Wheels MFG Outboard
  PF30-OUT bottom bracket
• BBRight shell, installation width 79 mm, press-fit depth 46 mm Wheels MFG Outboard
  BBRIGHT-OUT bottom bracket
• Housing BB386, installation width 86.5 mm, press-fit depth 46 mm, Wheels MFG Outboard
  386EVO + 386EVO-SHI bottom bracket
• Trek BB90 shell, installation width 90 mm, press-fit dimension 41 mm FSA
  230-600 bottom bracket

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com