- Includes two Traxxas Power Cell Battery packs (NiMH, 7-C Stick)
- NEW TQi 2.4GHz radio system
- Automatically stores and loads settings for up to 30 Traxxas Link-enabled models—just switch on and drive, “model selection” is not required
- Multi-Function knob
- Adjustable steering and throttle percentage (dual rates)
- Adjustable steering and throttle sensitivity (exponential)
- Adjustable steering and throttle end points
- High 13ms frame rate and near-zero latency for responsive control
- TQi 2.4GHz 5-channel micro receiver (#6518) with fail-safe security and integrated telemetry ports
- Compatible with optional TQi Docking Base (#6510) for full Traxxas Link App
- EVX-2™ 16.8-volt FWD/REV electronic speed control
- EZ-Set® single button programming
- LiPo, NiCad, and NiMH compatible with two-stage Low-Voltage Detection
- Three selectable drive profiles: Sport Mode, Race Mode, and Training Mode
- Sport Mode – Forward / Brake / Reverse
- Race Mode – Forward / Brake
- Training Mode™ - 50% Forward / Brake / 50% Reverse (patent pending)
- Twin Titan® 550 fan cooled motors
- Tunable sealed differentials in Maxx® differential housings
- Backward compatible to all Maxx models
- Differential uses Revo®-Spec gears and components
- Revo®-Spec front, rear, and center driveshafts
- New heavy-duty Brushless Ready™ transmission
- Over two-times stronger than original E-Maxx transmission
- Steel idler gear
- Optional accessory two-speed adjustable ratio gear sets
- Close ratio or wide ratio for super-low first gear
- Available accessory single motor mount and gear cover
- Revo®-Spec Torque-Control™ slipper clutch
- Quick release, battery hold down straps
- Reversible to accept stick packs and side-by-side packs
- Available accessory battery strap for oversized battery packs (sold separately)
- Long wheelbase, low center-of-gravity chassis increases stability
- Extended by 30mm
- Accepts 6-cell or 7-cell flat battery packs
- Batteries sit lower in the chassis for lower CG
- Lower skid plate protects the center driveline while allowing quick access to the transmission
- Water-proof high-torque dual steering servos (#2056)
- Precision hex hardware throughout
- Soft-compound 3.8" Maxx chevron tires pre-glued on mirror-chrome
Split-Spoke wheels - Two-piece gear cover makes it easy to access and change gearing
- Requires removal of only one screw for access
- Sealed pivot balls and front/rear outer driveshafts
- Eight fully-adjustable, coil-over Ultra Shocks
- Integrated dual servo bellcrank and servo saver
- Watertight sealed receiver box
- 100% captured steering and toe linkage
- Double-shear components capture and secure all rod ends for unmatched durability
- Rear toe-links are captured by a thick tie-bar for double-shear strength
- Updated shock towers and adjustable body mounts
- Gray composite components
- Chassis, skid plates, bulkheads, shock bodies, spur gear cover
- Precision rubber-sealed ball bearings
- Blue-anodized aluminum antenna crimp nut
- Available accessory four-position wheelie bar (sold separately)
- Fully painted, trimmed, and decaled ProGraphix® body
MODEL 3903: Fully assembled, Ready-To-Race®, with TQi™ 2.4GHz radio system, EVX-2 Waterproof Electronic Speed Control and ProGraphix® painted body.

































