The Hyperion Z1709-06 is a superior quality brushless motor that is no longer in production. These motors are thought of as the best available for E-36 models. CB Model Designs has acquired the remaining stock of these fine motors and is making them available to our customers. Update: All remaining stock has been sold. This info is being maintained for information only. Combined with an APC 6 x 6E prop, these motors will produce outstanding climb performance.