The Vortex R8.1 Pro is our new ESC designed specifically for sensor brushless 1/8 scale racing. Until today, 1/8 ESCs have not disposed of all the technologies available in high-end 1/10 ESCs, this is where the R8.1 Pro comes into play. Because it is based on our world championship winning R10 Pro ESC, it features the same ground breaking performance, advanced programmable software, dual sensor port and machined aluminum case design. You can now fit the latest ESC technology into your 1/8 scale car. The R8.1 Pro has been extensively tested by our R&D team to ensure that you get the same kind of performance that R10 Pro users have become accustomed to. Paired with one of our new 690 size VST2 motors, this ESC forms the ultimate 1/8 brushless power combo.