Hybrid bicycle manufactured by Specialized.

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tripple ring crank sprockets

can i replace only the large sprocket on a 2012 trek 7.2?

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Looking through all the data available, including that at Shimano, indicates that the rings are riveted onto the crank.

Which means that no, you can not replace only one ring at a time.

If there is damage to just one ring, you'll need to replace the crankset all together.

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David will be eternally grateful.
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