Shimano Ultegra Di2 Disc R8170 Gear Upgrade Kit

The upgrade kit for the Shimano Ultegra R8100 Di2 Disc groupset components. Includes all necessary cables. The Shimano Ultegra Series Di2 R1800 disc brake components, the affordable version of Shimano’s electronic road bike components.

The new Di2 platform for the 12x2-speed STI Di2 shift-brake levers requires no cable connection to the rear derailleur or front derailleur. The 12x2-speed Di2 Dual Control shift levers ST R8170 have the necessary wireless module integrated. The shift levers are powered by CR1632 batteries. These have a service life of up to 2 years. The Di2 12-speed rear derailleur, with its additional wireless unit, acts as a receiver and distributor of shift signals and is connected to the battery and front derailleur for power supply and shift command 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 Ultegra R8170 Di2 Disc groupset:

• Shimano Ultegra Di2 rear derailleur, RD R8150
• Shimano Ultegra Di2 front derailleur, FD R8150
• Optional derailleur clamp for 31.6 or 34.9 mm
• Shimano Ultegra Di2 STI, Dual Control Disc shift lever, 11/2-speed, ST R8170
• Shimano Di2 cable set, EW-SD300: 2 cables
• Shimano Di2 battery, BT-DN300 internal round
• Shimano Ultegra BRR8170 Folding Mount brake calipers
• Shimano disc brake hoses 100 and 170 cm, SM-BH-90-JK-SSR
• Shimano small parts for assembly and cable shortening
• Optional Shimano Ultegra cassette, CS-R8100 in 2 gear ranges
• optional Shimano chain, CN M8100
• optional charger

Shimano Ultegra RD R8150 Di2 rear derailleur

The new Ultegra rear derailleur is the centrepiece of the new 12-speed Di2 components. It provides the wireless functionality and connection to external components, and also houses the charging port. 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 Ultegra Di2 RD R8150 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 Ultegra FD R8150 Di2 front derailleur

Lighter, faster and more aerodynamic: the Ultegra 12-speed Di2 front derailleur. Designed for chainring sizes ranging from 50/34 to 54/40 teeth, the new 12-speed Ultegra Di2 front derailleur operates even faster and with greater precision. More compact and faster than ever before, the Ultegra R8150 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 Ultegra R8150 front derailleur shifts between chainrings as quickly and seamlessly as no other model on the market.

Shimano Ultegra Di2 Disc Shift/Brake Levers ST R8170:

The Di2 Disc wireless shift/brake levers, featuring a new ergonomic shape, are characterised by higher horns that are also slightly angled inwards. Furthermore, the clearance between the brake lever and the handlebar has been slightly increased to enable 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. 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. In addition, the shift-brake levers feature classic cable connections for mounting additional shift levers.

Shimano Ultegra Disc Brake Caliper BR-R8170:

The BR-RS8170 road bike disc brake calipers for the 12-speed Ultegra groupset. These calipers are compatible with all Shimano disc brake levers. Recommended brake discs: RT-MT800. 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 Ultegra BR-R8170 brake caliper offers improved modulation, a quieter braking system and an extremely simple bleeding procedure. The Ultegra R8170 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.

Synchro-Shift technology

Synchro-Shift technology greatly simplifies gear changes and significantly reduces the number of decisions riders have to make whilst riding. Particularly in critical race situations or when riding at the limit, riders often have to juggle a multitude of decisions alongside the physical strain, which can frequently lead to errors and poor choices. 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 gear changes the rider makes on the rear derailleur. Essentially, this means that only one shifter with two buttons 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.

Shimano CN - M8100 Chain

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

The chain is perfectly matched to 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.

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