9-speed RD the same as 10-speed RD?
05-10-11 | 10:40 PM
#1
Thread Starter
Age before beauty
Joined: Mar 2011
Posts: 244
Likes: 31
From: Hill Country, Texas
9-speed RD the same as 10-speed RD?
I may need to replace my 5 year old Shimano 105 RD. I have a 9-speed cassette and brifter. I sort of remember hearing that I could just use a new 10-speed 105 RD to replace the older RD. Is this true? Or do I need to find a 9-speed RD to replace my current 9-speed RD???
I'm not trying to change to 10-speed. I'd use the new RD on my 9-speed cassette with my 9-speed brifter.
I'm not trying to change to 10-speed. I'd use the new RD on my 9-speed cassette with my 9-speed brifter.
05-10-11 | 11:44 PM
#2
Low car diet
Joined: Aug 2007
Posts: 2,407
Likes: 4
From: Corvallis, OR, USA
Bikes: 2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
Yep, totally compatible. Both RDs have the same cable-pull ratio. The shifter will tell it where to stop for each gear, regardless of how many gears there are.
05-11-11 | 07:15 AM
#4
Senior Member
Joined: May 2009
Posts: 93
Likes: 0
It will surely work. Here the 105 5700 RD is sold as being 8, 9 and 10-speed compatible: https://www.ribblecycles.co.uk/sp/roa...ar/SHIMGRRR520
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