How do I know if I have a 9 or 10 speed crankset?
BTW I am looking to get a single ring Atlas.
post the model number.
9spd were 22-32-42
10spd are 24-32-40
10spd cranks also have Dyna-sys somewhere on them, perhaps just on the chainrings. 770 was the last model of 9. Anything 775 or newer is 10.
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