Ultegra di2 short cage mech - what cassette range will it cover?

johnnyfartpants · April 2021

Hello all,

What range will a Shimano Ultegra Di2 R8050 Rear Derailleur SS cover up to please - a 30 tooth cassette sprocket?

Thanks, Johnny

shirley_basso · April 2021

Yep should do. Be careful using big-big though.

johnnyfartpants · April 2021

Thanks for that; hoped it would.
I never do the 'big/big or little/little' thing anyhow ............

moonshine · April 2021

Ive Ultegra Di2 on my Cervelo C3 and the R8050 rear mech works fine with a 11-30T rear cassette

BetterShifting_Terry · April 2021

11-30T is a perfectly valid option according to the RD-R8050-SS specs, so you'll be fine.

You can probably get away with using 32T, but that's not guaranteed to work (since it's out of spec: https://bike.shimano.com/en-EU/product/component/ultegra-r8050-di2/RD-R8050-SS.html)

johnnyfartpants · April 2021

Thanks all.......appreciated!

W12_Lad · June 2021

Bit late but I use 32 with no problems at all.

johnnyfartpants · June 2021

Thanks

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