WP APEX PRO 8750 Shock 1390 Super Duke RAPEX PRO 8750 Shock Greater grip and traction Motorsport expertise for the street Improved feel for rear tires Later braking and earlier acceleration possible Greater confidence in all situations Improved contact with the ground Greater comfort Improved response and feedback from riding surface in every riding situation SPECS Shipps fully assembled and ready for track or street use. We are not currently offering customized setups for this product.