GRX WH-RX880 700c Carbon Disc Brake WheelsetDescription The Shimano GRX WH RX880 700c Carbon Disc Brake Wheelset is the rolling foundation for your gravel superbike, with a wide and stable tubeless rim and direct engagement 12 speed specific hubs for whatever gearing system you're into. Along with GRX 12 speed mechanical components, Shimano is also introducing an updated carbon gravel wheel that's purpose built to handle the rough and tumble rigors of dirt road riding. The new RX880 wheelset is