A crank that utilizes tech and bioengineering to get you up hills faster. FSA Gossamer BB30 alloy crank with 165 mm crankarms (more efficient power transfer that's also easier on your knees - see what they're saying online); 50 tooth big ring and 35 tooth oval ring adds another layer of efficiency. Blue oval ring with matching chainring bolts adds a bit of bling. Selling because I sold the Cannondale that I had put this on as an upgrade; buyer wanted the original matching Cannondale crank.