The Shimano ST-6870 features Di2 technology shifting for easy and precise control - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear. Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift.
The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts.
If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.
Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.
You will receive an email to confirm when your item has been sent.
You can also check the status of your order and individual items by accessing your account details and following the prompts.
Please allow 10 working days from the shipping date of your order before notifying us of any late deliveries.
It may be advisable to check with your neighbors to see if your delivery has been left with them, check any places it could be left such as: garage, porch, or behind garbage cans if it was too big to fit through your mailbox. Contact your local post office to see if the item has been returned to the depot as undelivered and awaiting collection.
Please see our returns policy.
Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.
Performed a replacement of my DI2 10 speed to Ultegra DI2 11 speed using RD-6870, CS-6800, and CN-9000. The review was straight forward and performs well. Like the narrower ratios I'm getting in the taller gears now. Shimano seems to want you to also upgrade teh front DR, but that's not essential. I may do that if Pro Bike Kit starts selling the Ultegra DI2 front DR.
Reliable Ultegra DI2 rear derailer for a great price. Does as good of job as the more expensive Dura Ace.
You can always count on Shimano products to be top notch and with the prices you can't beat Probikekit. Easy install to my existing Di2 system and with the usual minimal adjustment required of Di2 the rear derailleur works great. Highly recommend moving to the 11 speed if you can as you can especially use that 32 cog if you live in a hilly area. I didn't think I needed it but it certainly is a nice step up. Go cycle your legs off!!!