Shimano 105 Di2 R7100 50/34 GROUPSET

Shimano 105 Di2 R7100 50/34 GROUPSET

£1499.99  £1,730.00
Part Number:



SHIMANO 105 goes electronic. Fewer cables. No clutter. And lightning-fast precision shifts at the touch of a button. Shift under load. Customise your shifts. Go 12-speed and relish more range to find your sweet spot when climbing. Enjoy DURA-ACE and ULTEGRA infused tech. Enjoy the silence. Enjoy the new day.


SHIMANO 105 Di2 is an ode to the magic that each new day brings. It shifts our perspective. And inspires us to see the world anew in all its glorious technicolour. It dares us to ride out and find out what lies ahead.

SHIMANO 105 Di2 borrows from top-tier DURA-ACE and ULTEGRA technology and functionality wrapped up in sophisticated ergonomics. Unfold the four benefits of a new day.


SHIMANO 105 goes wireless. Think lightning-fast precision shifts at the touch of a button without skipping a beat even when fatigue sets in or you encounter an unexpected ascent. Going electronic also lets you shift under load such as when climbing or sprinting. Customise how you shift. Shift without performance loss from Day 1 to Day 1000. And enjoy the silence to contemplate the world around you.


Our new 12-speed cassette is the same width as our 11-speed cassette, so the space between each cog is narrower. This means shifts so smooth youll barely notice them. Whether climbing, descending or rolling on the flats, youll keep your rhythm and stay in the flow.


Di2 is beautifully integrated into the design of the bike with no stretched or frayed cables in sight or to replace. Wireless shifting brings a clean cockpit free of shift wires and ports. While the internal Di2 battery is concealed in the seat post or frameset.


The smallest cog of the 12-speed 11-36T rear cassette has 11 teeth while the largest cog has 36. This offers a big range of gears so you can climb hilly terrain or push on the downhills with superb control and ease. And it might just be one tooth from 11 to 12-speed but smaller shifts so small youll barely feel them bring a lovely rhythm and flow.

Find out more:

  • 105 Di2 Shifters (ST-R7170)
  • Flat Mount Brake Calipers (BR-R7170)
  • 105 Chainset172.5mm50-34T (FC-R7100)
  • 105 Cassette 11-34T (CS-R7100-12)
  • 105 Di2 Front Derailleur (FD-R7150)
  • 105 Di2 Rear Derailleur (RD-R7150)
  • Rotors (SM-RT70)
  • Di2 Battery (BT-DN300)

Here at the Bike Shed we always strive to offer value for money and offer friendly expert advice on the best quality products we can source.

We are great supporters of shopping locally due to the benefits it has on our local economy, employment, and community. However, we do not want to see you disadvantaged by choosing to shop with us and we, therefore, will match any UK based competitors’ prices on the following conditions:

• The product must be available with the UK supplier even if discontinued or an older model.

• If assembly is required there may be an additional charge for this.
Please note: If the Bike Shed assembles your bike not only will your warranty be more robust you also qualify for a free first service with us.

• We reserve the right to contact the seller to verify the price/availability/accuracy etc.

• Used, ex-demo, ex-display, returns, and all online auction sites do not qualify.

Where the item does not match the above, we still attempt to be competitive in terms of price, quality, and service.

We reserve the right to decline the price promise at our own discretion

Our delivery charges are based on delivery to mainland Britain. For Northern Ireland, Northern Scotland and all offshore UK islands there is an additional charge. Orders placed after 1pm will be classed as the next working day.

Click & Collect

FREE (0-3 working days)
Choose to collect your bike from one of our four stores in Devon.
If paying by finance your order must be delivered to your home address, alternatively, you can apply in-store and take your bike home the same day.
*Paying by finance online and collecting in-store is currently not possible.

Bike Delivery

Bikes under £500 - £35 (1-5 working days)
Bikes over £500 - FREE (1-5 working days)

Turbo Trainer Delivery

£25 (1-5 Working Days)

Clothing, Parts & Accessories

Standard Delivery over £50 - FREE (4-5 Working Days)
Standard Delivery under £50 - £3.95 (4-5 Working Days)
Priority 1st Class - £4.95 (3 Working Days)

Northern Ireland, Highlands and Islands

Bikes £100
Turbo Trainers £100

Supplier Warehouse Products

Please allow 7-10 working days for your order to arrive.
Due to worldwide parts availability issues and increased demand occasionally delivery times may exceed this. If this is the case we will contact you and offer you the option to wait, swap to an alternative product or receive a full refund.

If you are unavailable to take delivery of your order at your address we may be able to arrange for the courier to leave your goods in a safe place or with a neighbour. Please be aware that we can take no responsibility for lost or damaged goods that you have chosen not to sign for. We regret that we can accept no responsibility for subsequent damage that may occur, once the order has been left at the delivery address.

If at a first attempt the courier fails to deliver the order then they will leave a card and it will be up to the recipient to make arrangements to receive the order from them. The courier will try to deliver the order once more free of charge, after this they will charge out at their standard rate, this will be advised by the courier at the time of arranging any subsequent deliveries.


We can usually arrange for couriers to deliver between 9.00am and 5.00pm Monday to Friday. You will be contacted to arrange a convenient time once your order has been processed.
All bikes are fully built and setup by a professional mechanic before being boxed up and sent out. If you require your bike not to be built please request this at the time of purchase.
Bike delivery times can vary between 1 - 5 working days to allow time for your bike to be built and setup before we send it out.


We do not currently offer delivery outside of the UK.


Bike Returns: If you desire to return your bike, you must keep it in the box and call us on 01363 774773 to arrange a collection.

Please note the following:

  1. If the bike is damaged or the incorrect bike is sent, we will cover the cost of collection and delivery of the replacement bike.
  2. If we send the correct bike, but upon inspection, you decide it is not the bike for you, there will be an £100 charge for the collection.
  3. Please do not ride the bike as a full refund cannot be given if the bike has been used.

Damaged Goods: If order(s) are broken or spoiled when it is delivered then you must notify us as within 24 hours of delivery, otherwise the returns policy becomes invalid. You will have the option of returning the whole order or just the affected items. You can notify us by phone on 01363 774773, email on or by post by writing to The BikeShed, Union Road, Crediton, Devon, EX17 3AN. All refunds under this returns policy will be paid within 30 days of you notifying us, providing that the merchandise has been collected by our courier. Any items being returned must be in their original packaging to prevent any further damage.

Cancellations: You can cancel an order at any time up to 7 days from the date of delivery as long as the items remain unopened and intact by calling us on 01363 774773, contacting us via email on or by post by writing to The BikeShed, Union Road, Crediton, Devon, EX17 3AN. You will have responsibility for looking after the items until we collect it, we will reimburse the price of the items within 30 days from the date of which you inform us that wish to cancel the order, provided that the order has been collected by the courier. Unfortunately we are not able to reimburse you the delivery cost of sending unwanted items back to us.


Unfortunately from time to time items may become unavailable, we will do our best to minimise this occurrence however if it should happen then we will contact you to suggest an appropriate alternative.

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