Spinergy’s MXX-e was developed from our proven Moto wheel technology. They feature a foam core 30mm internal carbon rim width to accommodate wider tire compatibility. Included are our e-bike specific patented PBO spokes, which are 33% thicker than our standard rounded spokes. Combine that with our e-bike specific "44" hub with a 35% increase in size, the MXX-e is meant to take on all the added torque and torsional forces applied to it. Whether you are on a trail run, cross country, or racing, the MXX-e provides the comfort and traction you need. Ride longer and harder and see the wheels take anything you can throw at them! The 26mm profile rim with PBO spokes maintain a lightweight wheelset that can be set up as tubeless.