They Say Technology Isolates People. We Couldn't Agree More. A ride on the radically light MX Z® is unlike anything else. No wonder more MX Z sleds have been sold in the last 10 years than any other sled. Acceleration that demands you hold on tight and maneuverability where even the slightest movement triggers an immediate response, both in handling and in heart rate. Simply put, it dominates the trail. MX Z® X-RS® This race-inspired trail sled is built for hard core riders looking for the features, technology and styling of the MX Z X-RS snocross sled.