Shimano Ultegra Di2 RD-6870 Rear Derailleur
In true Ultegra fashion, the 6870 series takes the pro tested Di2 technology from its steeper Dura-Ace big brother, to a price that non-pros can sink their teeth into. Di2 electronic shifting enables a whole new level of riding that can't be experienced through traditional mechanical shifting, by offering smoother, faster, more precise and nearly flawless shifting. The Ultegra 6870 Rear Derailleur utilizes Shimano's E-tube software for ingenious customization of shifting. For example, the 6870 Rear Derailleur has the ability to shift up or down through all of the gears with a single press and hold of the shift button via the multi-shift function. With the E-tube platform, the rider can customize exactly how many gear changes a press and hold actuates. Five shifting speeds are available, ranging from slow to lightning fast. On top of it all, there are no cables to wear out or become contaminated. Go Ultegra 6870 for precise, insanely fast shifts across an 11-speed cassette, no matter the conditions, with just one click of a button. Finally, customize your gearing choices for tough climbs with an all-new 32T cog capacity in the GS cage version of the derailleur.
- Sealed bearing tension pulley
- Cage Length: Short
- Cassette Spacing: Shimano/SRAM 11-speed
- Chain Wrap Capacity (teeth): 33 teeth (SS cage), 37 teeth (GS Cage)
- Maximum Sprocket: low €“ 28T, top €“ 12T
- Minimum Sprocket: low €“ 23T, top €“ 11T
- Maximum Front Difference: 16T
- Color: Gray
- Largest Cog (teeth): 28 teeth (SS cage), 32T (GS cage)
- Shifter/Derailleur Compatibility: Shimano Ultegra Di2 11 speed
- Weight (g): 250 g (SS), 260g (GS)
Please Note: All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions. To update the firmware on your components, use the Di2 system checker from Shimano by clicking here.
2 months ago
4 months ago
2 months ago
1 month ago
1 year ago
3 months ago
PROS: Attractive Design, Easy To Install, Lightweight, Durable
BEST USES: Road Biking, Upgrade, Racing
PROS: Attractive Design, Easy To Install
low stock across the US.
7 months ago
4 months ago
Q & A
Jenson USA ships worldwide, including APO/FPO addresses. For a quote, simply add the items you are interested in to your shopping cart and look for the "Shipping Options" box. You don't have to login or create an account to see shipping charges.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your preferred address, we can accept your foreign credit card and ship to a USA address for you.
Get free 1-day California shipping with your $50 purchase today, on most orders. Please note this offer is only available to physical shipping addresses in California(no PO Boxes), and oversize charges still apply on some heavy/large items