Fouriers CNC Crank Arm set for BSA BB68/73 SRAM GXP spider Crankset 30MM Axle Gray arm. Chainring is not included, Chainring Converter Shifter. To Sram GXP is included!SRAM GXP chainring please find in shop. Impact crank is made of 7075-T651 aluminum alloy, which allows the crank to have a strong rigidity. At the same time, the weight can also be much light. We pursue the perfect metal process, and the process is 100% CNC machining and manufacturing, precise control of all matching sizes and matching tooth profiles. Impact crank set uses a 30mm spindle with a unique 4-arm tooth chainring, The circular connection design can achieve a better GXP system's power transmission and impact strength. Material: high-strength aluminum alloy 7075-T651. We will offer help to resolve your problems as fast as possible. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Cranksets". The seller is "bidnow4u2008" and is located in this country: CN. This item can be shipped worldwide.