Shimano Ultegra 6870 Complete Di2 Groupset
New and improved, the best of both worlds. Now Shimano’s second tier groupset takes the 11 speed functions of the 6800 mechanical groupset and pairs it with Di2 technology used in the 6770. This does not make it some sort of mongrel though. Weight has been shed, shifting has been improved and design has been tweaked to make this the most complete Ultegra groupset yet.
Here at Sigma Sport we have pieced together the ultimate electronic package for your new build or to treat your current steed to a serious electronic upgrade.
A replacement to the popular Ultegra 6770, Shimano have used ST-6870 shifters, very similar to Shimano’s flagship Dura-Ace Di2 lever in shape. Slimmer than the 6770, to give better ergonomics and an improved grip when out of the saddle. Also new is the shift button shape and texture, focusing purely on ease of use.
20 grams lighter than it’s predecessor and now with the advantage of being able to brake and gear changes now simultaneously.
The rear derailleur’s functions are now customisable, with the E-Tube software, allowing the rider to alter the speed of shifting, ideal for when you want rapid shifting down the cassette in a sprint.
Five unique shifting speeds should keep everyone happy and all with clockwork precision.
Cleaner wiring makes fitting the groupset easier and aesthetically keeps your bike looking clean and uncluttered. 21 grams lighter than the previous 6770 rear derailleur as well. Impressive, with all these technological advances and a lighter unit.
Up front and changes have been made to the front derailleur as well. 12 grams lighter and a sleeker design.
The Electrical componentry of the Ultegra 6870 Di2 groupset is complimented by the same Chainset, Brakes, Bottom-Bracket and Chain found in the mechanical 6800 groupset. The Ultegra 6800 Chainset is built upon Shimano's Hollowtech II technology, renowned for its incredible strength to weight ratio and ability to efficiently maximise power through the cranks.
A choice of chain ring variations allows for plenty of versatility, whether you are sprinting in your local road race, climbing an Alpine mountain or hurtling across the Ardennes cobbles, there will definitely be a gear ratio for you. All coming with an 11-28 cassette, giving you plenty of options.
Internal battery keeps everything tucked away, giving your bike a clean look, yet is still easy to hand when needed and a charging port near the handlebars makes for quick and easy charging, whether using the mains or your computer.
Shimano's 6800 Brake Calipers offer the rider improved feel and modulation, with a spring tension adjuster for a more precise set-up. Shimano claim that, thanks to new brake pad compounds, braking power is increased by 20% in dry conditions and 100% more in the wet, when compared to previous generations.
All this adds up to a more refined, lighter and more versatile Di2 groupset.
Ultegra Di2 STi Levers
Lever ergonomics developed in Dura-Ace Di2 gives a natural feel allowing for total comfort when shifting or riding on the hoods
Ultegra Di2 Braze-On Front Derailleur
Ultegra Di2 Short Cage Rear Derailleur
Smooth, precise and quiet electronic shifting
Ultegra 6880 Crankset Also available as a compact and in a choice of arm length
- 172.5mm or 175mm crank arm length
- 50-34 or 53-39 chainring options
Dark grey variant of the Ultegra 6880 chainset styled to match the new Ultegra Di2 components
Ultegra 6870 cassette
Ultegra 6870 Front & Rear Brake Calipers
Dark grey colourway to match the rest of the Ultegra Di2 components.
Ultegra 6870 11 Speed Chain
Ultegra Bottom Bracket - English thread
Di2 Internal Battery - SMBTR2
Internal Battery Charger - SMBCR2
E-Tube Di2 Junction-A, 3 Port SMEW90A
E-Tube Di2 Grommet For EW-SD50 - 4 x 6mm - SMGM01
E-Tube Di2 Bottom Bracket
Junction for internal wire routing - SMJC41
EW-SD50 - 1x300, 2x350, 1x600, 1x700, 1x1000
Brake cable set
*Pedals are not included.
PRODUCT REF: 6870GROUP
UK Delivery Options
Free Delivery on all orders over £30
Estimated delivery within 4 working days (a delivery charge of £1.99 for orders under £30.00 will apply)
Have your order delivered to your local shop for just £1.99! For Highlands and Islands, please allow up to 5 working days. Orders can be shipped to UK CollectPlus locations specified on the SigmaSport.co.uk website where they will be held awaiting collection for a period of 10 days.
Orders placed are normally dispatched within 2 working days.
Priority 1st Class Delivery - £2.99
Estimated delivery within 2 working days.
Next Working Day Delivery* - £4.99
A guaranteed tracked courier delivery, place your order before 3pm, deliveries are made Monday to Friday.
Saturday pre 12 Delivery - £4.99
Saturday delivery orders must be placed by 1pm Friday and is only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Saturday pre 12pm by courier. Package must be signed for upon delivery.
Sunday pre 12 Delivery - £4.99
Sunday delivery orders must be placed by 1pm Friday and is only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Sunday pre 12pm by courier. Package must be signed for upon delivery.
Reserve and Collect** - FREE
Reserve & Collect is available on all items marked 'Collection'. It is a FREE delivery option that allows you to collect your order from either our Sigma Sport Store, Hampton Wick or our Reserve & Collect location in Esher. Just select the Reserve & Collect button in the basket.
** Reserve and Collect Collections - Clothing, parts and accessories: Next day. Orders placed on Friday, Saturday or Sunday will be available for collection after midday on the Monday (excluding Bank Holidays). Bikes: 4 days if in stock at store, collect in up to 7 days (sometimes quicker) if in stock at warehouse.
* Next Working Day delivery is only available on items in stock in our warehouse and excludes pre- order items. Next Day refers to the next working day, Bank Holidays will add an extra working day to the estimated delivery lead times. UK next day excludes Saturday deliveries. This service is not available to some remote postcode areas. Please contact us for help.
London Same Day (Order Before 1pm)
We offer a Same Day delivery service into London. The cost is £25.00 under 2Kg and £35 over 2Kg. Place your order before 1pm, deliveries are made Monday to Friday. Please note this option excludes bicycles.
More information on our Same Day delivery options.
All our bikes are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for despatch. All you have to do is add the pedals, rotate and tighten the handlebars. Typically we can deliver your bike in 4 - 5 working days.
Deliveries are made Monday to Friday on a pre-12pm delivery. One of our customer service team will be in contact to arrange a convenient day for delivery.
More information on all our UK delivery options.
International Delivery and Returns
We ship to over 100 countries using Tracked Post or DHL for fast and reliable deliveries. To see delivery options and delivery times, please add your items to the basket and proceed to the checkout.
International customers have 30 days from their order date to return unused and unopened purchased items.
Please note we cannot accept any goods back if the original packaging is opened. For full details, see this link.
Free UK Returns
We offer a free returns service for our UK customers. Sigma Sport will happily refund or exchange any item purchased at Sigma Sport, excluding Sigma Sport gift vouchers and personalised products except when faulty.
More information on the Sigma Sport returns procedure.