Yamaha’s implementation allows for six total modes, three automatic and three manual. The three automatic modes use information from the Inertial Measurement Unit (IMU) to skew rebound and compression damping in the fork and shock based on chassis motions. The IMU looks at engine speed, throttle angle, vehicle speed, fuel consumption, brake pressure, and a host of other parameters to predict what the chassis might do next. For example, if the bike is in hard acceleration mode, it will stiffen the shock’s compression damping and the fork’s rebound damping to keep chassis pitch to a minimum; hard braking will increase fork compression and shock rebound to achieve the same results. All skews are informed by the lean-angle sensors so that the reaction straight up and down is different from the reaction when the bike is leaned over. Plus, you can skew the skews, as it were, making the system stiffer or softer in both directions, at both ends, than it would be on the baseline settings. Smart stuff.