- The XPLR Slick is part of the Goodyear range of Fitment Series bicycle tires, designed for gravel racing and optimized around Zipp's 303 XPLR wheelset - Smooth centerline with angular siping that flows into multi-dimensional shoulder tread with large, angular, multi-sided corner knobs - Optimized construction, geometry, and volume to maximize aerodynamics and vibration damping - UHP - Proprietary blended compound for ultra-low rolling resistance and enhanced grip