Nederland
Belgium (English)
Deutschland
Finland
Ireland
Luxembourg
Portugal
Poland
Österreich
France
España
Italia
Sverige
Danmark
- Ordered before 22:00, delivered tomorrow
- Free tracked delivery
Shimano Ultegra R8170 Di2 Disc Groupset
Better productShift smoother and faster, and fully customize the buttons to your preference.
View better productAsk a question about this product
Email Customer Service
Try in store
A large part of our assortment is in stock in our stores and ready to try, fit, and experience without an appointment.
Our full assortment is available online. You can order and pay for products online and have them delivered for free to one of our Superstores. This way, you can try everything out. Not satisfied? You can return it to the store free of charge and receive a refund.
Shimano Ultegra R8170 Di2 Disc Groupset
Better productShift smoother and faster, and fully customize the buttons to your preference.
View better productPros & Cons
Pros & Cons
- Precise shifting performance and high speed shifting, even when standing on the pedals.
- The brake lever is adjustable and the rotors are less prone to rubbing, improving your control while braking.
- Semi-wireless, with only one cable between the battery, front and rear derailleur. Easy to install and low risk of cable failure.
- You can bleed the brakes without dismounting the caliper from the frame. Pretty convenient!
- You'll only need to position your derailleurs once, and then you're ready for the rest of your road bike's life. The shifters' battery life lasts an impressive 3 years.
- The Shimano 105 R7100 Di2 Disc groupset uses relatively heavy materials in its components. This is reflected in the total weight of the groupset.
Specifications
Specifications
| Brand | Shimano | |
| Bike Type | Road bike | |
| Gear Shift Type | Electronic | |
| Suitable for | Shimano 105 R7100 | |
| Drivetrain Type | 2 x 12 | |
| Length | 600 mm / 1200 mm | |
| Mount | Braze | |
| Maximum Capacity | 41T | |
| Crankset axle fit | Shimano Hollowtech II (24 mm) |
Shifters
The shifters' ergonomics have been further improved. It's easier to position your fingers under the shifters and the shifter covers offer more grip. Plus, it's now easier to adopt different hand positions. The stroke of the brake levers is adjustable, making the brakes suitable for cyclists with smaller hands too. In addition, the height of the Di2 buttons has been increased by 1.5 mm for both buttons. This makes it easier to operate the buttons even when wearing gloves or in the cold.
Disc brakes
The disc brakes have also been upgraded. The CNC milled aluminium Shimano 105 caliper is made up of 2 parts. As with the Dura-Ace and Ultegra calipers, 10% more space has been created between the brake pads and the rotors. This ensures the brakes do not, or hardly, rub when you are not braking. Nothing is more annoying than rotors rubbing up during a climb or a sprint. In addition, the braking power and control have noticeably improved.
Derailleurs
The shifting speed of the front and rear derailleurs has been increased significantly, by 58% and 45% respectively compared to the previous Shimano Di2 derailleurs. They have also been further improved, in particular to ensure better gear shifting under strain. This is immediately noticeable when climbing uphill or when accelerating. The front derailleur is comparable to those of the R8000 series, and can handle up to 52 teeth in front.
Hyperglide cassettes are available in different ratios. These ratios all feature the 'sweet spots', on the 6th, 7th and 8th sprockets. 12 speed makes it possible to keep the cogs that are most comfortable to ride 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 group only has a cable connection between the battery and the front and rear derailleur. The shifting performance has been taken to an even higher level. Not only has the shifting speed been increased, you can now also shift while pedalling. Plus, there's no need for a junction box anymore, but you can adjust and charge the groupset via the rear derailleur. When the groupset is fully charged, you can cycle for about 1000 kilometres. The wireless shifters each contain a button cell battery which will last up to 3 years before needing to be replaced.
Brake maintenance
Maintenance of the brakes is simplified. It's possible to bleed the brake without removing the caliper from the frame, thanks to a separate bleeding port and a rotary valve. A new funnel and spacer for bleeding the caliper help optimise the bleeding process.
Shimano DI2 app
Adjusting settings, such as assigning shift buttons, shifting ways or adjusting shifting speed, can be done via the Shimano Di2 app. The function of the shift buttons can be adjusted individually. The synchronised shift or semi-synchronised shift where the front derailleur automatically shifts to the ideal chainline is still possible.
• Shimano 105 BR-R7170 Brake Calipers (front & rear)
• Shimano 105 FD-R7150 Front Derailleur
• Shimano 105 RD-R7150 Rear Derailleur
• Shimano 105 FC-R7100 50/34T Crankset
• Shimano 105 CS-R7100 11-34T 12 Speed Cassette
• Shimano 105 CN-M7100 12 Speed Chain
• Shimano RT70 160 mm Center Lock Rotor
• Shimano RT70 160 mm Center Lock Rotor
• Electric Wire 600 mm Black
• Electric Wire 1200 mm Black
• Charging Cable 1700 mm
• Internal Battery
Reviews
Reviews
Photos from customers
Most recent reviews
5 / 5
Satisfied with my purchase and delivery
I wanted to replace my mechanical 105 drivetrain with a Di2 105. I'm very pleased because I've gained in responsiveness and control thanks to my bike computer, which gives me the gear without me having to bend over. Switching to 12v at the same time, which is great! The delivery time was very short and complied with what I was told: the order was delivered in 3 working days.
5 / 5
Shimano 105 Di2 on Ridley Fenix
Group bought to assemble my first complete bike. Everything went smoothly and works perfectly. The 105 groupset offers a good range of use for amateurs like me.
5 / 5
Perfect
Group 105 di2 the cheapest on the internet. Fast shipping and well protected parcel
5 / 5
Best price guaranteed and original product
Go with shimano is always the best option. 1. Mantel price is the lowest compared to elsewhere 2. The groupset has the same technology as dura ace, (just does not have satellite shifter) 3. Electronic shifting is faster and more precise compared to mechanical. Shifting under load is also no problem 4. The shape of the shifter/hood is very ergonomic and comfortable. And the look of the groupset is just the best I took a ride for 3.5 hours directly and it went very well Very recommended to buy cycling components through Mantel
Pros & Cons
5 / 5
Good product in its price point.
Does what it promise. Di2 just works. Still figuring out wich shiftmode suits my needs the best way. First time installing anyhting di2-related, googling dealers manuals were a huge help setting it up and not too hard to do. Next time will be even easier. Wireless shiftlevers meant two wires less to manouver through the frame which is a plus. On the other hand one can not update the levers’ firmaware without running a wire from the battery to a lever so its worth checking for updates before installing on your bike. If you want electronic shifting, there are options but you really can’t go wrong with this.
Pros & Cons
5
Satisfied with my purchase and delivery
I wanted to replace my mechanical 105 drivetrain with a Di2 105. I'm very pleased because I've gained in responsiveness and control thanks to my bike computer, which gives me the gear without me having to bend over. Switching to 12v at the same time, which is great! The delivery time was very short and complied with what I was told: the order was delivered in 3 working days.
5
Best price guaranteed and original product
Go with shimano is always the best option. 1. Mantel price is the lowest compared to elsewhere 2. The groupset has the same technology as dura ace, (just does not have satellite shifter) 3. Electronic shifting is faster and more precise compared to mechanical. Shifting under load is also no problem 4. The shape of the shifter/hood is very ergonomic and comfortable. And the look of the groupset is just the best I took a ride for 3.5 hours directly and it went very well Very recommended to buy cycling components through Mantel
-
Electronic shifting
-
Ergonomic
-
Lowest price
-
None
5
Good product in its price point.
Does what it promise. Di2 just works. Still figuring out wich shiftmode suits my needs the best way. First time installing anyhting di2-related, googling dealers manuals were a huge help setting it up and not too hard to do. Next time will be even easier. Wireless shiftlevers meant two wires less to manouver through the frame which is a plus. On the other hand one can not update the levers’ firmaware without running a wire from the battery to a lever so its worth checking for updates before installing on your bike. If you want electronic shifting, there are options but you really can’t go wrong with this.
-
105-level is very good
-
Easy to install even as a home mechanic
-
Ergonomics and esthetics
-
No additional buttons on shifter hoods
-
”Only 105” for some
Frequently bought together
Frequently bought together
Recommended by the product specialist
Recommended by the product specialist
Related products
Related products
|
|
|
|
|
| Shimano 105 R7170 Di2 Disc | Shimano Ultegra R8170 Di2 Disc | SRAM Rival eTap AXS Disc 2x12 | SRAM Force AXS E1 | |
| 14 reviews | 14 reviews | 1 review | ||
| Bike Type | Road bike | Road bike | Road bike | |
| Gear Shift Type | Electronic | Electronic | ||
| Suitable for | Shimano 105 R7100 | SRAM / SRAM Etap / SRAM eTap AXS | ||
| Drivetrain Type | 2 x 12 | |||
| Length | 600 mm / 1200 mm | 950 mm / 1800 mm | ||
| Mount | Braze | |||
| 949,- | From 1.279,- | From 849,- | From 1.249,- | |
| This product | View product | View product | View product |