What chain ring?

roverthehill
roverthehill Posts: 155
edited February 2013 in MTB workshop & tech
Hi,
Burnt out my middle chain ring - on the outer ring is says Truvativ 104 BCD 44T 9SPD GXP.

What's the story with chain rings? Do I need to buy truvativ or are various makes compatible? Are 'middle' ring diameters the same or is there anything I need to look out for? Any links to a cheap replacement would be greatly appreciated!

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