This product is offered in two different variants. The street version bushingis made with our purple 80A material with a tapered bore design and CNC-machined aluminum outer shell to allow for smooth articulation, while providing 30% more radial stiffness and 2.5mm of anti-dive geometry to sharpen up braking response and maintain wheel geometry on bumpy roads.The race version bushing is made with our black 95A material with a tapered bore design and CNC machined aluminum outer shell to allow for smooth articulation, while providing 160% more radial stiffness and 2.5mm of anti-dive geometry to sharpen up braking response and maintaining wheel geometry on the race track.