Reviews over the

Shimano 105 R7170 Di2 Disc

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.

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.

Group 105 di2 the cheapest on the internet. Fast shipping and well protected parcel

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

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

The 105 electric really changes the ride! It shifts on its own and the shift mode is a crazy feature when you come from a mechanical derailleur.

Pros & Cons

The 105 electric really changes the ride! It shifts on its own and the shift mode is a crazy feature when you come from a mechanical derailleur.

Shimano groupset, nothing to complain about except the noise made by the derailleur pulleys, as they do not have bearings, they make a "dry" noise, a squeaking noise. The group arrived late, which is understandable, as it was bought at Christmas. The packaging was poor, each product did not come in individual packages, but in plastic bags inside a box, something unacceptable on the part of either Shimano or Mantel, which leads one to think that it could be a disassembled groupset from a bicycle or who knows? In short, Shimano is a guarantee of reliability and Mantel is, for the moment, doing what it sells. Let's see how they respond with the warranty in the event of a malfunction.

Arrived complete and as described, packaging by Mantel, good price and fast delivery

Pros & Cons

I don't regret my purchase at all, top quality and precise gear changes.

I've just done my first outing and it was a real pleasure. I highly recommend it.

I have now fitted the Di2 components and have ridden the first 200 kilometres with them in extremely shift-intensive mountainous terrain. The components shift precisely and almost silently, even under load. I am thrilled.

Top product from Shimano, good price for coat, fast delivery

Brand new use. Good precision. To be seen over time (wear)

Pros & Cons