DT Swiss GRC 1400 Front Wheel - 650b 12 x 100mm Center-Lock BlackDT Swiss GRC 1400 Front Wheel 650b 12 x 100mm Center Lock Black. Introducing the Gravel racing GRC 1400. With a holistic approach of engineering DT re thought the characteristics of a modern benchmark setting gravel wheel set. Aerodynamic efficiency ideal support of wide gravel tires leading to comfort and traction off road as well as remarkable durability are only some of the key features that make this wheel set the perfect companion for your next