I put this Sette Amp saddle on my MTB last year and freakin love it. Its about 1/2 the size and weight of the WTB saddle it came with and is much more comfortable.
http://www.pricepoint.com/detail.htm?stylepkey=15965&style_id=270%20SETAM7&detailName=Sette%20Amp%20Saddle
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