Shimano Ultegra 6870 SS Rear Derailleur



8% off


For double gearing configurations
Weight: 254 g.
Compatible with 28T cassette sprocket
11-spd compatible

Count on precise and reliable shifting on every ride, every day with the Shimano Ultegra RD-6870SS electric rear derailleur. Adjust your derailleur once at installation and never worry about it coming out of adjustment; no cable stretch, no barrel adjusters. The completely sealed and waterproof system makes dirt and grit a non-issue. The clever crash-saver function automatically moves the cage all the way inward at the moment of impact, in an effort to save it from destruction.

Shimano Ultegra Di2 offers the most precise and reliable shifting imaginable, at the push of a button. Adjust the derailleurs once, and the intelligent, auto-trimming system returns derailleurs to the same position every time. The intuitive and user-friendly design can be set up at home and accommodates any frame; new or old.

Features of Ultegra 6870SS Rear Derailleur (11 speed)

  • Fast, precise and smooth electronic shifting - even under load
  • Easy electronic adjustment system
  • Crash saver function
  • Wide gear ratio - Compatible with 28T cassette sprocket

Model Number
Item Code
Shimano Ultegra 6870 SS Rear Derailleur


One coupon per order

Discount taken off MSRP

In stock items only

Coupons can not be combined with promotional gift certificates, however, purchased gift certificates may be used with the coupons. If you would like to use your coupon with a purchased gift certificate, please leave the gift certificate information in the comments section at checkout, and they will be applied during processing on the backend.

Some items are restricted

Groupsets, hand built wheels, special orders & labor costs are excluded from the coupon.

Additional exclusions may apply.


Backorder Policy

  • “Available for backorder” items typically ship from the Colorado Cyclist in 5-10 business days.
  • If an item is going to take longer than 2 weeks to ship from the Colorado Cyclist, we will reach out via email or phone with an estimated shipping time frame.
  • If an item is no longer available, we will reach out via email or phone to alert you that we are canceling the order.
  • Orders that include “available for backorder” items will not be charged until everything is in stock and ready to ship.
  • If you are purchasing both “in stock” & “available for backorder” items, please note that nothing will ship until we have all the items at the Colorado Cyclist facility. If you wish to have “in stock” items ship immediately, please place separate orders. All applicable shipping charges will apply.