This is a Traxxas Nitro 4-Tec 3.3 1:10 Scale 4WD On-Road Sedan. It’s the fastest and most-powerful Ready-To-Race model ever created. Combine the extreme power of the TRX 3.3 Racing Engine with an asphalt-hugging, lightweight chassis, and a raging fury of wickedly fast acceleration and supersonic speed is unleashed. This version of the Nitro 4-Tec 3.3 is equipped with the all-new Traxxas TQi radio system with Docking Base that turns your iPhone or iPod touch into a powerful tuning tool.