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Made for use with the Saint FC-M815 double crankset, the Shimano Shimano Saint FD-M815 Front Derailleur comes in two versions: top or bottom swing. This top swing option will keep your chain shifting smoothly and quickly. This derailleur accommodates the 57.5mm chainline that comes part and parcel with your 83mm bottom bracket. The dual-pull design means you can mount your cables to pull from above or below, and shims are included so you can clamp this sucker to 28.6, 31.8, or 34.9mm tubes. This derailleur jives with chain stay angles of 65-71 degrees, and chain ring ratios of 36/22T.

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Here's what others have to say...

My shimano Deore M510 front derailleur was...

My shimano Deore M510 front derailleur was smashed up this weekend and I'm wondering if I can switch it out for the saint derailleur with out switching my shifters. I have an 06 Specialized FSR XC with 3 rings on the front.

You should use the XT derailleur, the saint one is heavier and more freeride orientated.

This derailleur is 147g and the XT is 183g. Is there any real downside to using it instead of the XT?

The Saint Front Der is Designed to work with the 83 mm BB Shell and your Specialized has the XC Standard either a 68 or 73 mm BB Shell. Make sure you buy the right clamp style and buy the XT or SLX both will fit your ride.