The Rival crankset will help the serious cyclist put the power to the road while saving weight and money at the same time. The Rival Crankset uses Open Core Technology meaning the cranks are hollow-forged out of AL-6066 alloy. This allows the Rival cranks to be lighter and stiffer than a solid core crank. The stiffness is similar to SRAM flagship Red cranks, but at a slightly heavier weight. Sram's GXP bottom bracket is included in the crank package. The GXP bottom bracket has been designed to increase power transfer and rigidity while reducing wear.