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Discussion Starter · #1 ·
I have a Specialized Rockhopper with a badly rusted front derailleur. It has this stamped inside the clamp " L-034.9 " and this stamped inside the part that contacts the chain " Chainstay Angle 66* to 69* ".

The rear derailleur is labeled " Deore LX " but the front derailleur is only labeled " Deore ".

How can I find a replacement part number? Are these fairly generic so that other models can be used?
 

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This is FD-M510 - first gen 9-speed Deore, 3x9 low clamp. But many other models have the same spec, for example: FD-M530, FD-M590 and others from different series (LX, SLX, XT etc.) from the same era.
 

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Discussion Starter · #3 ·
You nailed it.

This is FD-M510 - first gen 9-speed Deore, 3x9 low clamp. But many other models have the same spec, for example: FD-M530, FD-M590 and others from different series (LX, SLX, XT etc.) from the same era.
The FD-M510 is a match, thank you very much!

Do I understand you correctly - these will work just as well: FD-M530, FD-M590 ?

Thanks again!
Mike
 

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Yes, 530 and 590 have the very same specifications. Mind that the 590 has two versions: 9 and 10 speed. The 10 speed is labeled FD-M590-10 and has a "dynasys" sticker. The 9-speed has a "Mega 9" sticker instead.
 
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