Sram xx1 eagle mtb crankset bb30the sram eagle crankset is the lightest strongest and stiffest crankset they offer and the most technologically advanced that they have ever created using a high tier design and construction processes sram has made a lightweight carbon crankset that can tackle any terrain in any location and at speeds a mountain biker can only imagine carbon tuned constructionthe eagle crankset was born from a completely reengineered construction using srams carbon tuned t