This was a Traxxas T-maxx 3.3 that has been converted to E-Maxx brushless with thunder tiger ace esc 150 Amp and turnigy 2100 kv motor running on 4s.

conversion made by

Stock Traxxas E-Maxx Brushless Edition 1/10
NEW Waterproof MXL-6s Brushless Power System
TQi 2.4GHz Radio System with Traxxas Link Wireless Module
Equipped with RPM/speed, motor temperature, and voltage telemetry sensors
Up to 25.2 Volts of Massive Brushless Power
Traxxas Power Cell Batteries Included
Heavy-Duty 17mm Hex Hubs
New body design and graphics
Aggressive 6.3″ Maxx-Sized tires
Black-Chrome 3.8″ Split-Spoke wheels
Top Speed: 35+mph out of the box, 65+mph all-out!

Traxxas’ E-Maxx Brushless Edition is better equipped than ever! The already-loaded E-Maxx now includes waterproof electronics, two Power Cell NiMH batteries, factory installed telemetry sensors, and the TQi transmitter with Traxxas Link Wireless Module as standard equipment. The included 3000mAh Power Cell NiMH batteries unleash the full fury of the waterproof MXL-6s power system. This heavy-duty setup gives E-Maxx wheel-lifting torque and brutally quick acceleration on the way to over 35mph—and blow by 65mph by installing optional Power Cell 3S LiPo batteries! Add your Android, iPhone or iPod touch (sold separately), and the Traxxas Link application (available on Google Play and the App Store) displays speed, temperature, voltage, and rpm data on a customizable, recordable virtual dashboard. E-Maxx arrives Ready-To-Race with all the necessary telemetry sensors installed. Traxxas Link also lets you adjust the TQi’s pro-level features quickly and easily with its intuitive, high-def, touch-screen interface.