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Shimano 105

Shimano 105 R7100 Di2 Groupset 170mm 50/34

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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!


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
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In any circumstance of delivery damage, warranty claim or return, please email: to request the appropriate forms.


Only the original purchaser has the right to return faulty goods.

Due to the high incidence of fraud we regret that we are unable to offer any refund without a valid receipt. You must include this with any claim. All refunds under this returns policy will be paid within 30 days of us receiving the returned goods. Refunds will be processed using the same method of payment used for the original purchase. Credit and debit card refunds must be made to the same card used for the original purchase.

For hygiene reasons, we are unable to accept returns of face masks or cycling underwear whereby the item has been removed from its packaging.

Our returns policy does not affect your statutory rights, full details of which can be obtained from any Trading Standards Department or Citizen’s Advice Bureau.


If an order(s) is broken or spoiled when it is delivered, please notify us within 48 hours of delivery otherwise the returns policy no longer applies. Within this period, we will also require images of the damage to the packaging and its contents. This will need to be emailed to the relevant store or The customer making a return will be held liable for costs arising from any damage that occurs to the item(s) when returning to any of our stores.


If you wish to return or exchange any unwanted item(s) for any reason, you can return the item(s) to the original store it was purchased from within 28 days. Partial returns are possible. Goods must be returned intact, unused, undamaged, clean or not having been fitted to a bike. Items need to be in resalable condition in original packaging including all warranty cards, manuals and accessories.

Refunds cannot necessarily be given if the item or bicycle was ordered specifically from our supplier to fulfil the initial order. In certain circumstances, an exchange will be possible.


Refunds of deposits cannot be given if the item or bicycle has had to be ordered specially from our supplier. If the item was from stock and has been held on deposit layaway for more than 28 days, then the deposit cannot be refunded, only exchanged or added to an account credit.


If you wish to cancel or return an order at any time up to 14 days from the date of order, please contact us as soon as possible via email, or phone the branch you purchased from for a copy of our returns form. Partial returns are possible. Goods must be returned intact, unused, undamaged, clean and not having been fitted to a bike. Items need to be in resalable condition in original packaging including all warranty cards, manuals and accessories. This includes any damaged incurred whilst building, packaging or shipping a bike. Please do not directly stick labels or write on the item or the item's original packaging.

Send your goods (unless otherwise stated) securely packaged by a recorded delivery method, including a copy of your receipt and the returns form sent by us, to the store where you purchased the item from.

Please Note: The customer making a return will be held liable for costs arising from any loss or damage that occurs to the item(s) when returning to any of our stores.

It’s the responsibility of the purchaser to arrange and cover the costs of any returns. If you want assistance in returning a bulky item such as a bicycle, fork or turbo trainer, please email the Returns Department on to arrange a special courier collection. Depending on the reasons for returning an item a charge may be incurred for this service.


In any circumstance of a suspected faulty item purchased from ourselves either in-store or online, please contact us as soon as possible in person or via email with details and/or pictures where possible to obtain a warranty returns number.

On receipt of your goods, we will carry out a warranty inspection and will contact you within 3 working days of receipt. Terms and conditions of warranties vary depending on the product, so please consult your owner's guide of the manufacturer directly for clarification. If your purchase is within the manufacturer's warranty period we will repair or replace the item(s) as stated in the manufacturer's warranty guidelines. In some cases, the manufacturer/ supplier may require to see the item(s) before repair or replacement can take place. In this unavoidable situation, we will inform you and it is likely to increase the turnaround time of your claim.

The customer is entitled to an immediate refund if the goods are deemed to be faulty, of unsatisfactory quality or unfit for purpose within 30 days of purchase. Cycle Revolution reserve the right to exchange or repair any faulty goods between 30 days and before 6 months from the original purchase. Should this one and only repair be unsatisfactory then a customer is entitled to a complete refund. After 6 months from purchase, it is the responsibility of the purchaser to prove a fault.

Fair wear and tear or misuse are not considered a fault and Thomas Cycle Revolution would not be liable in these cases.

Labour or transportation costs are not covered by any warranty. As part of our customer service commitment, we are happy to cover the labour of any warranty claim for 6 month, upon bicycles we supplied or repaired.


Thomas’s Cycle Revolution Ltd reserve the right to decline a refund or an exchange if the condition of the item(s) don’t comply with the terms above and/or the claim is outside the stated time scales.

Sorry, gift certificates and charitable prizes cannot be returned and account credits cannot be refunded.

Thomas Cycle Revolution reserve the right to pass on charges onto the customer for any return of unwanted goods that incurs a cost to the process. These include any costs levied by a finance company, courier or CycleScheme provider. We also have the right to charge for any labour or courier costs it may take to process a return should any complications arise due to negligence or accidental damage.

We will try our best to process any return, exchange, refund or warranty claim as efficiently and fairly as possible, complying with the terms above and manufacturers guidelines. We respectfully ask that customers realise that we are only human, and rude or threatening behaviour to any staff member cannot be tolerated.

Shimano 105 R7100 Di2 Groupset 170mm 50/34


Brand:Shimano 105


The Shimano 105 R7150 Di2 groupset is perhaps—without exaggeration—the most hotly anticipated groupset of the century. Even in mechanical form, the 105 series is widely regarded as one of the most reliable and affordable performance groupsets, with the introduction of electronic the gap between the brand’s mid-tier range and its top-tier is now closer than ever.

A Battery For The Ages:The introduction of wireless shifting might leave you feeling concerned you’ll be forever charging batteries and living in perpetual fear you’ll be stranded in you biggest gear miles from anywhere. But with 105 Di2, power is supplied via two CR1632 coin cell batteries in the shifters, which should provide over three years of life. With such a range, even the heaviest of users shouldn’t find themselves in a constant state of charging and re-charging batteries.

Semi-wireless Setup:105 R7150 uses the same semi-wireless, 12-speed shifting setup as the top-tier models. The proprietary semi-wireless system means there is no longer any need from wires to the shifters to the derailleurs. Since there’s no need for wires and cables, the cockpit of a bike set up with 105 Di2 is cleaner and less cluttered than ever.

Shift Into Gear:Of course with the change to electronic gearing, one of the most significant changes to the groupset is in the shifters themselves; the all-new 105 ST-R7170 levers now operate in much the same way as the top-of-the-line shifters. Shifting gear couldn’t be simpler: click a button on the shifter and almost instantly you’ll hear the derailleur whir into life. Drawing on Shimano’s years of experience in electronic shifting, you can expect smooth gear changes at the touch of a button.

Without the need to accommodate levers, wires, or ports, the shape of the R7150’s levers has been brought more in line with the sleeker Ultegra and Dura-Ace shifters. The new, slimmed down, STI levers are also more ergonomically shaped, thanks to the raised hood peak and offer more opportunity to refine the reach.

The Brains Of The Operation:Another significant change to previous mechanical setup is in the front and rear derailleurs. The rear derailleur is an integrated, 12-speed wireless unit, which will comfortably accommodate an 11–36T cassette. Such a wide range of gears is perfect for those big climbing days, without spinning out when the road tips back down or when you’re racing along in fast bunch rides. The rear mech uses Shimano’s Shadow technology is incorporated to reduce the risk of the derailleur hitting the chainstay in rough-riding conditions, and to provide smoother, quieter performance.

The 105 Di2 front derailleur offers the smooth shifting you’d expect from the Japanese component makers. It can be programmed to be manual, or full or semi-synchronised, accommodating a 50T or 52T chainring.

Crank It Up:Shimano continue to deploy their famed Hollowtech II technology in the R7100 crankset, which is now 2x12-speed. This is the same technology they have employed in the 105 range for years, and features also in the company’s premium lines. The result is a sturdy crankset, that is stiff and relatively light. Incorporated also is Hollowglide technology, which offers more precise and efficient power transfer than ever before. Shimano have been able to reduce the weight of the crankset but maintain stiffness, strength, and performance.

Stopping Performance:The 105 hydraulic disc brakes of the previous iteration were highly capable; for the latest ST-R7170, Shimano have further improved braking performance. The lever-action required for braking is now lighter and smoother, offering a greater area for braking control. For 105 Di2, the clearance for pads has been increased by 10%, reducing braking noise. Overall, rain or shine, you can be assured of high-performance stopping power.


  • 105 Di2 Shifters (ST-R7170)
  • Flat Mount Brake Calipers (BR-R7170)
  • 105 Chainset 170mm 50-34T (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)
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