This is the new OS55HZ Limited Edition with Velocity Stack. I’ve been running this motor for a couple months now and I am very impressed with the improvement in performance. The transition from mid-range to high needle and back during 3D flight is virtually seamless. The recovery time after loading the motor has also been minimized likely due to the new velocity stack. Grab one of these for yourself here!

E-Fest 2012 was a blast! See you there in 2013!