The Cymatics XFLO 110mm/86A Dual Density wheels are available with the X-Flex core (Yellow or Black Hub) or Reflex core (Black Hub)
Although both options of the 110mm wheel are 86A on the outer layer of urethane (the rolling surface), there is an interior band of urethane in the wheel that allows you to fully tailor the wheel to your terrain. If you are skating rough roads in an urban setting, the X-flex core is a great choice because it acts as a shock absorber when rolling over the bumps. If distance and speed are your goals, then the Reflex core is the right choice because of its higher rebound core, more of your energy in momentum is kept.
Sold in a set of 6 wheels, bearings not included.