Truvativ descendant dh mtb crankset pf30 83mmtruvativs descendant dh pf30 83mm mtb crankset draws on the experience that has been gained through countless world cup downhill victories on previous models to produce a crankset that is light enough to help you beat the clock but also tough enough for the most extreme freeriding its finished off with srams pro rider favourite x sync chainring which features sharp square edged teeth for ultimate chain engagement and excellent chain retenti