Ergon's GD1 is a cost-conscious version of the GD1 Factory with GravityControl Rubber. This first Ergon gravity grip with tapered shape offers more damping in the outer area of the grip and a slim inner diameter. That means the grip feels soft but still very defined and precise. The surface profile provides greater grip with less gripping force to let you go harder, longer while maintaining tight control. The low-profile inner stop is a subtle reference that facilitates lightning-fast repositioning of the hand, and the high-strength aluminum inner clamp keeps the grip from twisting, even on carbon handlebars.