SRAM Force Crank Spider 11 Speed Give yourself the option to convert your existing SRAM Force cranks into a 110mm or 130mm BCD with the SRAM Force Crank Spider 11 Speed. It's a fairly simple process of swaping out your current spider for the new one. Features Direct mount spider Compatible with S900/s950/s950 cranksets Force 1 22 CX1 Crank Arm Spider | Sram | Force Crank Spider 11 Speed | Black | 110Mm Bcd, 3-Bolt Direct Mount