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Model Number: TRX3908

Designed From The Start For Brushless Power
At Traxxas, we dont make conversions. We built it right the first time. So, when our engineers sat down to design the latest E-Maxx, they made sure it had all the strength and durability needed for todays most powerful aftermarket brushless setups. Give E-Maxx all youve got; its Brushless-Ready transmission is built for hard-hitting 6S LiPo power with the burliest brushless motors, and every component between the motor and the tires is proven tough for full-throttle fun, pack after pack, with the durability and reliability you expect from Traxxas.

Castle Creations Mamba Monster Brushless System
Built specifically to handle the rigors of large, power-hungry trucks, the Mamba Monster speed control is ready for 6S LiPo power with its massive 6.5mm gold-plated connectors, high-efficiency heatsink, integrated cooling fan and heavy-duty components. The speed control sends its power pulses to a Castle 2200Kv 75mm motor, designed specially for maximum performance and reliability with 6S LiPo power in torque-hungry applications. The aluminum motor can is machined to act as a massive heatsink, high-grade bearings deliver maximum efficiency, and high-strength Neodymium magnets give E-Maxx Brushless Edition outrageous torque. To resist the twist, a beefy 5mm shaft transfers power to the Brushless-Ready transmission.

Heavy-Duty 17mm Hex Hubs
E-Maxx Brushless Edition's 17mm splined aluminum hex hubs make certain its considerable horsepower is delivered directly to the treads. The splined design is extra strong with unsurpassed torque handling to resist twist-out no matter how hard the 2200Kv motor pulls at the tires. The unique hex-hub shape also accepts standard 17mm-hex wheels.

Traxxas TQ 2.4GHz Transmitter and 4-channel Micro Receiver
Extreme speed and power calls for extreme control, and Traxxas delivers with the proven TQ 2.4GHz radio system. The TQs ergonomic design houses spread-spectrum circuitry, eliminating the need for crystals and channels. Just switch on and drive; the 2.4GHz circuitry automatically locates an open channel for glitch-free operation, and the high-power transmitter gives you long-range control with the security of built-in fail-safe circuitry.


  • Includes two Traxxas Power Cell Battery packs (NiMH, 7-C Stick)
    • Traxxas High-Current Battery Connectors
  • Adjustable four-position wheelie bar
  • Castle Creations Mamba Monster ESC
    • 6.5mm gold-plated connectors
    • Integrated cooling fan o Heavy-duty construction
  • Castle Creations Mamba Monster 2200KV Motor
    • Machined heatsink can
    • 5mm rotor shaft
  • Traxxas TQ 2.4GHz Radio
    • Switch-on-and-drive convenience, no crystals or frequencies to select
    • Ergonomic design
  • Brushless transmission with metal center idler gear
  • Heavy-duty 17mm splined aluminum hex hubs and wheel nuts
  • 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 and LiPo packs of similar size
    • 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 (#2075)
  • Four-channel 2.4GHz micro receiver
    • Two channel-one outputs for dual steering servos (no Y-harness required)
  • Precision hex hardware throughout
  • 6.3 Inches diameter Maxx tires pre-glued on black-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
  • Four-position wheelie bar included
  • Fully painted, trimmed, and decaled ProGraphix body


  • Traxxas 1/10 E-Maxx Mamba Monster RTR RC Electric Truck
  • Traxxas TQ 2.4GHz Transmitter
  • 2 7-Cell 16.8V 3000mAh Rechargeable Battery Packs
  • Momba Monster ESC
  • Full Color Owner's Manual
  • Quality Tool Set


  • Length: 22.5 Inches (571mm)
  • Front Track: 16.5 Inches (419mm)
  • Center Ground Clearance: 4 Inches (101mm)
  • Weight: 154oz (4.36kg)
  • Height (Overall): 9.5 Inches (241mm)
  • Wheelbase: 13.2 Inches (335mm)
  • Front Shock Length: XXLong
  • Rear Shock Length: XXLong
  • Front Tires (Pre-glued): Maxx (6.3 Inches x 3.8 Inches)
  • Rear Tires (Pre-glued): Maxx (6.3 Inches x 3.8 Inches)
  • Front Wheels: 3.8 Inches Split-Spoke (Black Chrome)
  • Rear Wheels: 3.8 Inches Split-Spoke (Black Chrome)
  • Speed Control Type: Castle Creations Mamba Monster Froward/Reverse/Brake
  • Motor (Electric): Castle Creations Mamba Monster 2200KV
  • Transmission: Single-Speed (2nd Gear Only)
  • Orverall Drive Ratio: 20.88 (Stock, Out-Of-Box)
  • Differential type: Bevel Gear, Sealed, Limited Slip
  • Gear Pitch: 32-Pitch
  • Chassis Structure/Material: Molded Composite Nylon Tub
  • Brake Type: Electronic
  • Drive System: Shaft-Driven 4WD
  • Steering: Bellcrank
  • Radio System: Traxxas TQ 2.4GHz
  • Top Speed: 35+ MPH (Out of the box with included batteries), 65+ MPH (Twin 3S LiPo Batteries)
  • Skill Level: 2
  • Included Batteries: Two Traxxas Power Cell Batteries (NiMH, 7-C Stick)

Battery Requirements:

  • Vehicle: 2 7-Cell 16.8V 3000mAh Rechargeable Battery Packs (Included, Charger Not Included)
  • Transmitter: 8 AA Alkaline Batteries (Not Included)

For questions regarding this product please email our friendly customer service team.

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