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Shimano Ultegra RX RD-RX805 Di2 11-Speed Rear Derailleur

ShimanoUltegra RX RD-RX805 Di2 11-Speed Rear Derailleur(Return to Product Page)

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(4 customer reviews)
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User submitted reviews

Review by Roguebiker

Reviewed 10/16/2023
by Roguebiker
Cycling Enthusiast
Medford, OR
Value Rating
Overall Rating
Great versatile smooth shifting derailleur.

I bought this derailleur to replace one that I wore out. With the medium cage and proper derailleur

hanger, I am able to use an 11-42 cassette for my old legs. It shifts perfectly with room to probably use

an 11-46 cassette if it comes to that. I will never go back to mechanical shifting again.

Thank you for your feedback.

Review by Lou P.

Reviewed 10/4/2018
by Lou P.
Competitive Racer
Fruita, CO
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Typical Shimano Quality

It took me awhile to get this to work properly. After a few attempts I went to the shop manual and followed directions exactly, and the derailleur works great. It's taking me awhile to make the shift to installing Di2, compared to cable actuated drivetrains, but once it was setup properly, it's great! Fast, quiet and I love the effortless shifting. B screw adjustment is critical, take note.

Thank you for your feedback.

Review by Anonymous

Reviewed 10/29/2018
by Anonymous
Seattle
Overall Rating
1 of 1 customers found this review helpful.
Super good for cyclocross

I have been using this derailleur in a 1x setup for cyclocross for the past month. It shifts perfectly and is super quiet with the clutch engaged.

Thank you for your feedback.

Review by Vitaliy

Reviewed 3/15/2019
by Vitaliy
Los Angeles, CA
Overall Rating
Works great

Love having clutch on my gravel bike, shifting is smooth as you would expect from Di2 components.

On my rig clears XT m8000 11-42 cassette without roadlink or similar extenders.

Thank you for your feedback.

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