Drivers all over the world have been winning races and benefiting from all the Spektrum advantages since it first came out at the Worlds three years ago (need to check the dates). Because of the sheer popularity of Spektrum with the racing fraternity Spektrum engineers have over that time refined the original system to address some of the needs of racers producing a pro series that moves performance on to a new level.

The Pro System sees response time shrunk from 5.6milliseconds to 3.0milliseconds, providing lightning fast reaction from the moment the steering or throttle is touched!
While Spektrum equipment has been extremely reliable for the vast majority of owners, static electricity discharges (ESD), have found to cause rare but irritating “shutdowns” when it was used in cars competing at some carpet and on-road racing venues in conditions of extremely low humidity. After a lot of work by the engineers, the source of the problem was found and the Pro System incorporates changes that eliminate the problem for good.

To handle the rigors of competitive racing Pro Series receivers are now treated with a virtually clear conformal coating called ReliaKote™. This is an exclusive Spektrum plus that ensures reliable performance no matter how much dirt, gunk and motor spray works its way into your Pro Series receiver’s case.
Besides these other advances, the Pro Series system features an advanced, more rugged, premium-quality oscillator that not only shrugs off shock loads, but actually increases range via its RF link-boosting, ultra-precise frequency accuracy.