Shimano Dura Ace 12-speed Di2 R9250 gear upgrade kit

The Shimano Dura Ace Di2 12x2-speed component groupset for rim brakes, optionally including brakes, cassette, chain and charger

The components of the pros: the high-end Dura Ace 12-speed series made from the finest materials – titanium, carbon and aluminium. As a complete package: the Shimano Dura Ace R9200 Di2 groupset for rim brakes, optionally with 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.

Contents of the Shimano Dura Ace R9270 Di2 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-R9250 STI, Dual Control shift lever, 2x12-speed for rim brakes
• Shimano Di2 EW-SD300 cable set, 5 pieces
• Shimano Di2 BT-DN300 battery, internal round
• Junction Port EW-JC304
• Optional charging cable
• Optional Shimano Dura Ace CS-R9200 cassette, available in 2 gear ratios
• Optional Shimano Dura Ace CN-M9100 chain

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 to external components, and also includes the charging port, replacing 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 button, 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 shifts 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 Di2 ST R9250 shift/brake levers:

The Di2 shift/brake levers with a new ergonomic shape. These STI levers do not have a wireless function and require cabling. The space 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 better and more securely with their thumb and index finger, whilst the remaining three fingers can be comfortably positioned between the handlebars and the brake lever. However, thanks to an adjustment and enlargement of the shift button design, 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. In addition, the shift-brake levers feature classic cable connections for mounting additional shift levers.

Shimano Dura-Ace BR R9200 / BR B9210 rim brake:

The elegantly designed rim brake of the R9200 series, with its lightweight dual-pivot brake body, offers maximum precision for better control and greater reliability in races. Thanks to the additional reinforcement booster, the Dura Ace BR R9200 brakes offer unprecedented torsional stiffness. The rim brake is easy to adjust and maintain thanks to easy access to tools and the ability to change wheels quickly.

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 excellent shifting performance when shifting up or down.

Synchro-Shift Technology

Synchro-Shift technology greatly simplifies shifting and significantly reduces the number of decision-making processes that take place whilst riding. Particularly in crucial race situations or when riding at the limit, riders often have to navigate a multitude of decision-making processes 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 Rim Brake 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 the Junction Port EW-JC304.

Unlike the disc brake version, the Di2 12-speed STI shifters for rim brakes are not wireless and require the EW-JC304 junction port for cabling. This provides 4 connectors to link the EW-SD300 cables to the battery. A total of 5 cables are required: 2 cables, approx. 60 cm long, from the STI to the Junction Port, and 1 cable, approx. 140 cm long, from the Junction Port to the battery. Due to its small size, the junction port can be easily stowed in the down tube of the frame without any additional mounting aids. In addition, a power supply cable of 120 cm for the rear derailleur and 60 cm for the front derailleur is required.

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