To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The new SHIMANO 105 brings Di2 shifting to a new set of riders. For those who have only experienced mechanical shifting and ergonomics, SHIMANO 105 Di2 represents a transformation of the road cycling experience.
The new SHIMANO 105 brings Di2 shifting to a new set of riders. For those who have only experienced mechanical shifting and ergonomics, SHIMANO 105 Di2 represents a transformation of the road cycling experience.
Shimano

Shimano 105 Di2 R7100 12 Speed Disc Brake Groupset

£799.00 £1,674.91 52% off
Earn
in Customer Rewards when you buy this item today
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Shimano 105 Di2 R7100 12 Speed Disc Brake Groupset

Season:ASSEMBLY

Brand:Shimano

Code:7100105Di2GSET-WEB

The new SHIMANO 105 brings Di2 shifting to a new set of riders. For those who have only experienced mechanical shifting and ergonomics, SHIMANO 105 Di2 represents a transformation of the road cycling experience. With function and technologies inherited from DURA-ACE and ULTEGRA, SHIMANO 105 is the culmination of years of research and development. With a shared Di2 platform, sophisticated ergonomics, SHIMANO 105-optimized gear combinations, and an exceptional brake system, the new SHIMANO 105 marks a new era of affordable performance.

Features:

  • The new SHIMANO 105 shift/brake lever features Di2 electronic shifting for the first time, bringing precise, intuitive gear changes to even more riders. Reach adjustment and customized button functions allow you to dial in your ideal ergonomics.
  • Receiving the wireless shifting signal from the shift lever, the SHIMANO 105 rear derailleur completes a shift in the blink of an eye with its high-performance motor and optimized link structure. This is the hub of the Di2 system, with the charging port, indicator LEDs, adjustment switches and more integrated into a compact package. A low-profile design reduces damage from contact and falls.
  • The 11-36T 12-speed cassette offers a wide gear range of 327%. From sprinting on the flats to steep climbs, you can choose the best gear ratio to suit every situation. Gear steps are optimized for pedalling efficiency, with the first eight cogs focusing on a natural and comfortable connection, and the largest four cogs allowing you to select from a wide range of gears while avoiding abrupt gear ratio changes.
  • With proven hydraulic braking technology, the new SHIMANO 105 calipers feature the SHIMANO Flat Mount System and its low-profile design that is ideal for road bikes. More compact and lighter than ever, the R7170 brakes offer wide pad clearance for easy wheel removal and quiet performance as well as one-way bleeding for easy, clean maintenance.

Includes:

  • 105 R7100 12spd Chainset (select your size)
  • 105 CS-HG710 12-speed 11-36T Cassette
  • 105 Di2R7170 STI hydraulic brake/shift lever 12-speed right
  • 105 Di2 R7170 STI hydraulic brake/shift lever double left
  • 105 BR-R7170 hydraulic disc brake callipers front and rear
  • 105 Di2RD-R7150 12-speed rear derailleur, E-tube
  • 105 Di2 FD-R7150 12-speed front derailleur E-tube, braze-on, double
  • 105/SLX CN-M7100 HG+ 12-speed 126L chain silver
  • BT-DN300 Di2 internal battery black
  • EW-EC300 charging cable 1700 mm
  • EW-SD300 E-tube Di2 electric wire 1400 mm
  • EW-SD300 E-tube Di2 electric wire 900 mm

Does Not Include:

  • Bottom Bracket - you will need a bottom bracket suitable for your frame. To shop bottom brackets click here
  • Brake Rotors. To shop your preferred size of rotors click here

Note on E-Tube Wires:

Standard setup uses two E-tube wires, one to connect each derailleur to the Di2 battery.
The ideal length of wires needed depends on the length of your frame's tubes.
Two wires are included at lengths 900 and 1400 mm, which should be suitable for most frames. Different lengths are available here if needed.
Sizing Information
Professional Opinion
Question(s) answered about Shimano 105 Di2 R7100 12 Speed Disc Brake Groupset
Ask a question
Question(s) asked regarding Shimano 105 Di2 R7100 12 Speed Disc Brake Groupset

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
  • Does the groupset come with junction boxes and also what is the charging port type for the battery?
    Question asked by Geoff Audis on 01/10/2025 11:22:20
    This system does not require or include a junction box as the shifters are wireless and the mechs connect to the battery.

    Charging is done for the main battery via the supplier cable which connects to the rear mech.
  • Home Road Cycling Components Shimano Groupsets