The SHIMANO 105 brings Di2 shifting to a new group of riders.
The new SHIMANO 105 brings Di2 shifting to a new group of riders. For those who have only experienced mechanical shifting and ergonomics, SHIMANO 105 Di2 represents a transformation of the road cycling experience.
The Shimano 105 Di2 features hybrid operation. The battery, located inside the frame, the derailleur, and the derailleur are all wired together. Meanwhile, the levers have a wireless operations.
The current Di2 (Digital Integrated Intelligence), as we have commented, lacks cables from the controls, there being a single cable that connects the change and derailleur and battery. This hybrid character (some components connected by cable and others wireless), offers fast and precise changes, with a long battery life and without interference.
The new groupset incorporates an advanced 12-speed transmission, thus having more gears available to improve pedaling efficiency in any situation. An improved interface and ergonomics, achieving a magnificent balance between comfort, aerodynamics and aesthetics.
Disc brakes
The disc brakes have also been revised. The Shimano 105 aluminum brake caliper consists of 2 parts and is CNC machined. As with the Dura-Ace and Ultegra calipers, 10% more clearance has been created between the brake pads and brake discs. This has ensured that the brakes cannot or barely apply when you don't brake. Nothing is more annoying than the friction of the brake discs during a climb or in a sprint. In addition, power and braking dosage have been significantly improved.
Hyperslide
The shifting speed of the front and rear derailleurs has been significantly increased by 58% and 45% over previous Shimano Di2 derailleurs. And further optimized, especially for better shifting under load. You notice this immediately when standing up or at an acceleration of tempo.
Technology
Hyperglide cassettes are available in different ratios. When choosing these ratios, the 'sweet spot' has been included in the 6, 7 and 8 sprockets. The 12-speed allows gears that drive most pleasantly to be maintained at medium speeds despite large ratio differences. The cassettes come with the HG mounting pattern, which is also compatible with all Shimano HG 11-speed bodies.
Semi-wireless
This Shimano 105 R7100 Di2 Disc groupset only has a connection cable between the battery, front and rear derailleur. Shifting performance has been brought to an even higher level. Not only has your shifting speed increased, you can now shift smoothly while applying power to the pedals. A junction box is no longer necessary, but you can set up and charge the group via the rear derailleur. When the group is fully charged, it can travel about 1000 kilometers. Wireless shifters contain 2 button cell batteries that last approximately 3 years before needing to be replaced.
Shimano DI2 application
All tuning options, such as shift button mapping, shift mode, or shift speed adjustment, can be done via the Shimano Di2 app. The function of the switch buttons can be individually adjusted. Synchro shifting or semi-synchronous shifting in which the front derailleur automatically shifts along the ideal chain line is still possible.
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Contents:
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ST-R7170 Di2 Hydraulic Levers: Wireless, ergonomic 12-speed shifters.
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BR-R7170 Brake Calipers: Faster piston retraction and superior control.
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RD-R7150 Rear Derailleur: The heart of the system, housing the charging port and wireless unit.
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FD-R7150 Front Derailleur: Fast, precise, and quiet front shifting.
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BT-DN300 Internal Battery: Long-lasting power for thousands of shifts.
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EW-SD300 Wires & EW-EC300 Charging Cable.
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The Mini Groupset, excluding the Disc rotors,Crank,Cassette,Chain and BB
- This Groupset from OEM, No wrapping
What's the meaning of OEM
OEM stands for Original Equipment Manufacturer. It refers to a company that produces parts, components, or products that are then used or sold by another company under its own brand name. For example, a company might manufacture computer components (like motherboards or graphics cards) that are then sold by a larger company that assembles them into complete computers.
In some cases, the term OEM can also refer to products sold in bulk or as components, which are intended for system builders or companies rather than individual consumers. OEM products might not include retail packaging or additional accessories, as they are meant to be used as part of a larger product.