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Shimano's RD-R9150 Dura Ace Di2 Rear Derailleur uses a low-profile Shadow design that keeps it more closely tucked beneath the cassette for more stable shifting and reduced likelihood of being damaged in a crash. It also allows the upper pulley to maintain a consistent distance from the cogs across all gears for more precise shifting on wider-range cassettes. Compatibility with Shimano Synchro Shift allows both the front and rear derailleur to be controlled by a single shifter up front.
Compatible with Shimano Di2 electronic groupsets only. Claimed weight is 204 g.
Details:
Low-Profile Shadow RD Design
Largest Cog Size: 30T
Minimum Cog Size: 11T
Maximum Chainring Difference: 16T
Total Capacity: 33T
Reviews Ordered by Most Relevant First
5 stars
4 stars
3 stars
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1 stars
Little quieter on the shifting & like the new color .
by Anonymous
Cycling Enthusiast
1 of 1 customers found this review helpful.
Matches the color of today's matte black finish bikes . Seems to shift a bit quieter when shifting to different gears compared to the old . The only problem I had is that you have to make sure the derailleur is in a slight angle back when mounting on the hanger or else you won't able to take the rear wheel off the bike .
Reviewed 6/27/2017
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Little quieter on the shifting & like the new color .
by Anonymous
Cycling Enthusiast
1 of 1 customers found this review helpful.
Matches the color of today's matte black finish bikes . Seems to shift a bit quieter when shifting to different gears compared to the old . The only problem I had is that you have to make sure the derailleur is in a slight angle back when mounting on the hanger or else you won't able to take the rear wheel off the bike .
Reviewed 6/27/2017
Was this review useful to you?
Yes /
No Thank you for your feedback.
