which chainring do i need??

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This topic has 4 replies, 4 voices, and was last updated 14 years ago by Mister-P.

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which chainring do i need??
JamieMc
Free Member

I need to replace the middle chain ring on my 2009 stumpjumper but not sure which ring i need. The cranks are shimano FC-M542 which i think are custom for Specialized. What chain ring do i need to buy to fit these cranks ?? i cant see a part number on the current chainring either

Posted 14 years ago

robbo1234biking
Full Member

http://www.chainreactioncycles.com/SearchResults.aspx?Search=shimano+chainrings

Youve got a wide choice as Shimano are pretty interchangeable. You are prob looking at either a deore

http://www.chainreactioncycles.com/Models.aspx?ModelID=38192

Or LX

http://www.chainreactioncycles.com/Models.aspx?ModelID=9233

Posted 14 years ago

BigJohn
Full Member

Best, cheapest and longest lasting will probably be a Deore 32 teeth . They all tend to be standard these days (4 arm, 104mm BCD if you want to know).

Posted 14 years ago

tinsy
Free Member

Its this one right?
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/FC/EV-FC-M542-2681_v1_m56577569830625623.pdf

Pretty sure any deore middle will fit it and this one is the cheapest.
http://www.chainreactioncycles.com/Models.aspx?ModelID=5699

Interestingly, one says replacement, and one says genuine shimano, never noticed that before.

http://www.chainreactioncycles.com/Models.aspx?ModelID=38192

Posted 14 years ago

Mister-P
Free Member

That chainest runs the same middle ring as an FC-M580 LX chainset, part number 1FU 9802.

Posted 14 years ago