Shimano RX100 crank
12-01-17, 02:45 PM
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Shimano RX100 crank
Hello...looking for some help. Try to replace a crank arms on a Shimano RX100 from 170mm to 175mm. The current ones are marked FC-550. I found NOS on eBay but they are marked FC-551.
Are they the same or can someone please help me with the difference?
Thank you!
Are they the same or can someone please help me with the difference?
Thank you!
12-01-17, 03:26 PM
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You want everything but the chainrings?? If the BCD is the same you should be OK. Have you looked at buying an entire new crankset? Many more choices and possibly more economical, especially if you can sell your old one.
12-01-17, 04:21 PM
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RX100 started as a 7-speed group, and changed to an 8-speed group before being replaced by other groups. A550 was the 7-speed version, A551 the 8-speed version. I would be surprised if there were any significant differences for the crankset.
