I want to change my 50T chainring of my Shimano Sora FC-3503 crankset.
Do I have to buy the same one or other chainrings are also compatible with it?
If yes could you give me some light which ones ?
Thanks in advance.
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1Replace it with what? What's your goal? Different gearing? Less weight?– Andrew HenleApr 23, 2019 at 10:31
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The goal was just to change it. Unfortunately FC-3503 is hard to get in my location, but i found in my local store SHIMANO Claris FC-2403 50T 130BCD. Will it be compatible with my crankset ? Will it be compatible with my CS-HG50-9 + CN-HG93 ?– user42185Apr 24, 2019 at 4:20
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Are you replacing just the chainring, or the entire crankset? The Sora FC-5303 looks to be a Hollowtech II crankset, while the Claris 2403 looks like it's an Octalink crankset, which means it uses a different bottom bracket. Or are you just changing the chainring?– Andrew HenleApr 24, 2019 at 11:38
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Just a chainring, the biggest one: 50T.– user42185Apr 25, 2019 at 4:18
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1 Answer
The 50 tooth chainring is a standard 5 bolt, 130 BCD chainring. There are other options available that will fit, but most 130 BCD will have 53 teeth, so you may have to hunt around for a bit to find a 50 tooth that you like.
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Thanks for your replay. I've found that claris group has also 130BCD 50T. Problem solved. Apr 23, 2019 at 7:46