TRA-3903$449.99Color: - Please Select One -RedBlueBlackWhite

The Ultimate Electric 4X4 Maxx Monster!

• NEW TQi 2.4GHz Transmitter and Receiver
• Two Traxxas Power Cell Batteries Included!
• 16.8 Volts of Pure Maxx Muscle
• Top Speed: 30+mph!
  

The Traxxas E-Maxx takes 4WD monster truck thrashing to the next level of fun and excitement. To go along with the torquey 16.8-volt EVX-2 dual-motor power system, key improvements have been engineered into the suspension, driveline, chassis, and electronics to make this the toughest, most versatile E-Maxx ever. The E-Maxx is equipped with Revo sealed pivot ball suspension; dual-servo steering; an all-new transmission; Revo sealed differentials; a new, longer chassis; and waterproof electronics. And that's just the start. Everywhere you look on E-Maxx Traxxas engineers have thoughtfully integrated enhancements and features that make E-Maxx stronger, easier to use, and most importantly, more fun!

70% of the earth's surface is covered by water.
E-Maxx says… "Bring it on!"

E-Maxx is equipped with sealed electronics that eliminate boundaries and let you drive where you want to drive. E-Maxx lets you blaze new trails through water, mud, snow and other wet-running conditions that wouldn't have been possible before. Since water is no longer the enemy, E-Maxx opens up a whole new world of 4x4 adventure and fun.

The World's Most Advanced Ready-To-Race Radio System

E-Maxx is equipped with the world's most advanced Ready-To-Race radio system. The all-new Traxxas TQi arrives with a full complement of tuning features and offers the unbeatable convenience of "no channels, no crystals" 2.4GHz technology—but that's just the beginning. Automatic model recognition instantly recalls your settings for up to 30 Traxxas Link-enabled models. Just switch on and drive, no naming or "model memory" settings required. Power up the transmitter and the model you want to drive, and the settings for that model are dialed in immediately! The new TQi 2.4GHz transmitter is fully adjustable: steering and throttle end points can be set precisely, and the Multi-Function knob can be programmed to control Steering Sensitivity (Expo), Throttle Sensitivity (Expo), Steering Percentage (Dual Rate), Braking Percentage (Dual Rate), or Throttle Trim. TQi's ergonomic case design provides all-day driving comfort, and the unique internal antenna contributes to its sleek, modern look. 

TQi Docking Base Compatible

The TQi's most important new feature may already be in your pocket. The TQi can be equipped with an optional Docking Base (#6510) that turns your iPhone or iPod touch (sold separately) into a powerful tuning tool for your Traxxas model. The full-color display combines with the free Traxxas Link App (on the App Store) to deliver an intuitive, high-definition, full-color graphical user interface that unlocks the mysteries of optimizing your radio system for ultimate vehicle control. Traxxas Link also opens the door to telemetry capability when you add optional sensors to your model. Click on one of the following links to learn more about the ground-breaking TQi radio system, TQi Docking Base, and the Traxxas Link Application.

Ready For Brushless

E-Maxx is equipped with an all-new transmission that's been engineered to handle nearly 2 ½ times more torque than the original, and yet do it in a more compact package. Extra-wide gears, smart use of steel components, and the Revo-Spec Torque-Control slipper all combine for the strength needed to handle the extreme power and torque that's possible with today's battery and motor technology. The design positions the motors closer to the chassis for a lower cg and improved handling. An optional bolt-in two-speed is available for shift-on-the-fly gearing options. Revo-Spec large diameter sealed driveshafts and sealed differentials are used for massively increased torque handling and long-lasting performance. Since the diffs are completely sealed, they can be fine-tuned with different oil viscosities to adjust the limited-slip action.

16.8-Volt Power System

The waterproof Traxxas EVX-2 is optimized to deliver massive power from dual 7-cell battery packs. The EVX-2 packs a serious punch, belting out over 16 volts of power to the twin 550 high-torque motors. Titan 550 motors feature 30% longer motor armatures than a standard 540 size motor for monster big block torque. An internal fan helps keep the motors running at optimal temperatures for maximum power. Mash the throttle for wheelies on demand and absolutely mind-bending monster truck action that only E-Maxx can deliver. Designed by Traxxas, the EVX-2 features three drive profiles, thermal shutdown protection, low-voltage detection for compatibility with LiPo battery packs, and Traxxas high-current battery connectors. The EVX-2 also includes our exclusive, patent-pending Training Mode. This profile reduces the overall power output of the EVX-2 by 50% making it easier for young or new drivers to develop their control skills before unleashing full-power operation. The EVX-2 is manufactured by Traxxas to ensure the highest level of quality and support, plus it's backed by the exclusive Traxxas Lifetime Electronics Warranty.

Extended Wheelbase, Low CG Chassis

The chassis design is all new with 30mm of increased wheelbase for improved stability. The new battery compartments position the batteries lower, angled in towards the center of the truck for improved handling and cornering stability. The new stronger chassis braces work together with a new center skid plate to greatly enhance chassis strength and torsional rigidity.

Easy, Fast Battery Installation

Traxxas engineers are always looking for ways to make Traxxas products the standard for ease of use. The new snap-lock battery hold downs speed battery installation. Press a lever to release, snap them in to lock. Securing your batteries takes just seconds and there are no clips to lose. The new configurable battery compartments are designed to easily accept either 6 or 7-cell battery packs and are scaleable to fit today's battery technology and beyond. Precision metric hex hardware is used through the E-Maxx for easy servicing and a high-tech look.


Dual Servo Steering System

Dual, waterproof, high-torque servos drive a new heavy-duty bellcrank steering system. The integrated servo saver and smooth ball bearings combine with the dual-servo muscle to deliver the most powerful and precise Maxx steering system ever.

QUICK FEATURES ON E-MAXX (#3903)

• NEW TQi 2.4GHz Transmitter and Receiver
• Traxxas Power Cell Batteries Included!
• Waterproof electronics
• Waterproof servos & ESC
• All-new single speed transmission (Two-Speed optional)
• Revo-Spec sealed pivot ball suspension
• Revo-Spec sealed differentials
• Revo-Spec sealed outer and center driveshafts
• All-new, low-CG chassis design
• Stronger chassis braces
• New transmission skid plate
• Scaleable battery compartments
• Snap-lock battery hold downs
• Dual-servo steering system
• Integrated ervo saver
• Hex hardware throughout
• 3.8" mirror chrome Twin-Spoke wheels
• 3.8" Maxx chevron tires

E-Maxx model 3903 comes fully-assembled and Ready-To-Drive with the TQi 2.4GHz radio system installed and adjusted, EVX-2 power system with Low-Voltage Detection, Traxxas Power Cell batteries, a painted and decaled body, pre-glued tires, and detailed instructions. Traxxas backs the E-Maxx and all of our products with top-notch support that is second to none. A staff of skilled representatives is on-hand to answer your questions via phone, website, or e-mail. Unmatched parts support allows E-Maxx to be serviced with parts and support from thousands of hobby dealers worldwide. Your investment is also protected by the Traxxas Lifetime Electronics Warranty. Traxxas goes the extra mile to ensure that your R/C experience is easy and fun (and fast!). Follow the details link above to go in depth on all the E-Maxx performance benefits and also be sure to check out the videos page to see E-Maxx in action for yourself.

MODEL 3903: Fully assembled, Ready-To-Race, with TQi 2.4GHz radio system, EVX-2 Waterproof Electronic Speed Control and ProGraphix painted body.

Details

The World's Most Advanced Ready-To-Race Radio System 

Total Control. Traxxas models deserve the world's most advanced Ready-To-Race radio system. The radio system after all is the sole connection between the driver and machine. It has to be precise, comfortable, powerful, and reliable. The all-new Traxxas TQi radio system arrives with a full compliment of tuning features; long-range, high-output, 2.4GHz signal, and proven Traxxas reliability for rock-solid performance. It's so advanced; it doesn't even need an external antenna. However, the most important new feature may already be in your pocket. The TQi can be equipped with an optional Docking Base (#6510) that turns your iPhone or iPod touch into a powerful tuning tool for your Traxxas model. The full-color display combines with the Traxxas Link App to deliver an intuitive, high-definition, full-color graphical user interface that unlocks the mysteries of optimizing your radio system for ultimate vehicle control.

5-channel Micro Receiver with Fail-Safe Security

The TQi 2.4GHz micro receiver fits easily into any vehicle, and features dual channel-1 outputs for easy installation in vehicles with dual steering servos—no Y-harness necessary! The integrated LINK button makes it fast and easy to bind the receiver, and the two-color LED indicates power-on and bind status for fool-proof control and convenience. Traxxas Link Model Memory allows the receiver to recognize up to thirty TQi 2.4Ghz Traxxas Link enabled transmitters—just switch on and drive. In the event of signal loss due to an accidental switch-off or depleted batteries, the receiver will automatically return the throttle to neutral and hold the last commanded steering position. The Fail Safe programming is built-in and does not need to be set or activated. Three telemetry ports are incorporated in the 5-channel receiver to allow real-time data to be transmitted from your Traxxas model to the TQi transmitter.

EVX-2 Electronic Speed Control Equipped with the Traxxas High-Current Connector!

The EVX-2 delivers an incredible 16-plus volts, from two battery packs, making 16.8-volt, twin-motor setups more powerful than ever! Designed by Traxxas, the EVX-2 features a completely waterproof design, three drive profiles, Thermal Shutdown Protection, low-voltage detection for compatibility with LiPo battery packs, and gold-plated, high-current battery connectors. The EVX-2 also includes patent-pending Training Mode. This profile reduces the overall power output of the EVX-2 by 50% making it easier for young/new drivers to develop their control skills before unleashing full-power operation. The EVX-2 is manufactured by Traxxas to ensure the highest level of quality and support.

Traxxas Power Cell Batteries Included!

E-Maxx includes two genuine Power Cell Battery Packs to make sure you experience all the performance that’s been engineered into your Traxxas model. Power Cell packs are optimized for free-flowing power and maximum punch with premium quality, low-resistance cells; flexible, silicone-jacketed 12-gauge wire; heavy-duty welded tabs; and Traxxas' high-output, gold plated, high-current connectors. Seven cell packs give E-Maxx 16.8 volts of motivation for maximum speed, and precision assembly with attractive, individually wrapped cells and clear overwrap complete the Traxxas Power Cell package.

Traxxas High-Current Connectors

The EVX-2 electronic speed control comes equipped with two Traxxas High-Current Connectors. Designed to handle high-current applications, Traxxas Connectors effortlessly funnel the dual battery's total power to the electronics keeping things running cool and at full capacity.

Twin Titan 550 Motors

Titan 550 motors feature a 30% longer motor armature than a standard 540 size motor for monster big block torque. An internal fan helps keep the motor running at optimal temperatures for maximum power.

Extended Chassis Design

For improved stability and handling characteristics, a new chassis was engineered from the ground up. The new E-Maxx chassis features a 30mm longer wheelbase while offering maximum ground clearance (over 4 inches). The additional chassis length allows the use of flat seven-cell stick battery packs. To keep the handling tight, new angled battery compartments sit low in the chassis for an extremely low center of gravity.

Quick Release Battery Hold Downs

An Industry First! The unique chassis design features innovative quick release battery hold downs that install or remove in seconds without clips or tools. The battery hold downs are reversible for use with stick or side-by-side style battery packs. An optional battery strap is available for use with oversized batteries.

New Chassis Braces with Transmission Skidplate

Heavy-duty chassis braces coupled with an integrated transmission skid plate provide rigid support that protects the center driveline and virtually eliminates power robbing chassis flex.

Heavy-Duty Transmission

More compact and nearly 2 1/2 times stronger than the original E-Maxx transmission, the new single-speed Brushless Ready transmission features an oversized steel idler gear and a Revo-spec Torque-Control slipper clutch to handle the massive torque of high-performance brushless motors. To access spur and pinion gears quickly and easily, a unique two-piece gear cover can be removed and installed with a single hex screw. For additional tuning options an accessory single motor installation kit and two-speed gear sets are available.

Revo-Spec Torque-Control Slipper Clutch

The Torque-Control slipper clutch uses special semi-metallic friction material and finned aluminum alloy pressure plates to dissipate heat and provide consistent traction control. The semi-metallic friction material remains stable across a wide temperature range to provide smooth, linear engagement you can count on, lap after lap. Spur gears can be removed and replaced without altering the slipper adjustment. A center ball bearing maintains precise, long-lasting alignment with near friction-free running and virtually zero maintenance. Originally developed for Revo, the Torque-Control slipper is more than tough enough for E-Maxx. Only Traxxas has it!

Revo-Spec Drivetrain

Building on the durability of the reliable and incredibly tough Revo drivetrain, E-Maxx incorporates sealed super-duty driveshafts and sealed pivot ball suspension. Heavy-duty axle carriers use large diameter rubber-sealed bearings for ultra-smooth running.

Sealed Revo-Spec Differentials

New Maxx differential housings feature tunable sealed differentials with Revo internals for maximum tuning ability. Precision sealed with Traxxas X-ring silicone seals, E-Maxx differentials are designed for long-lasting performance and the ability to tune for specific running conditions. Built to handle extreme torque and power, these differentials offer unmatched versatility and toughness.

Dual Waterproof Steering Servos

Waterproof steering servos (#2056) use O-ring seals to keep the fun going when things get wet. The dual high-torque servos provide the muscle needed to turn the giant 3.8" Maxx Chevron tires with incredible precision and speed.

Waterproof Receiver Box

A ground-breaking weather-sealed receiver box is another Traxxas innovation that puts E-Maxx in a league of its own. The antenna and servo wires route neatly to a special watertight seal (patent pending). To protect the receiver from water, snow, mud, and dust, a custom shaped blue O-ring seals the receiver box. Thanks to the unique design, the receiver can be removed for service, and even aftermarket receivers can be used, without losing the watertight properties of the box.

Powerful Steering System

Dual, waterproof, high-torque servos drive a new heavy-duty bellcrank steering system. The integrated servo saver and smooth ball bearings combine with the dual-servo muscle to deliver the most powerful and precise Maxx steering system ever.

Soft Compound 3.8" Chevron Tires

Pre-glued to 3.8" Mirror-Chrome Split-Spoke wheels, the soft compound Maxx chevron tires are designed to maximize performance for all-terrain traction. On dirt the chevron tread pattern claws for traction providing superior forward bite and massive roosts, and on pavement the forgiving side grip allows the tire to power-slide while maintaining a sure-footed neutral feel.

Double-Shear Captured Linkages

E-Maxx features 100% double-shear connections to all steering and toe linkages to capture and secure all rod ends for unmatched durability. A thick tie-bar on the rear toe links further increases the double sheer strength.

That Famous Maxx Suspension

E-Maxx continues the Maxx tradition with its incredible WideMaxx 4-wheel independent suspension. Wicked long travel, nearly 4 inches at each wheel, is ready to take on just about the roughest terrain you can imagine. Eight oil-filled shocks (two at each wheel) deliver that plush feel and 'bottomless' suspension travel the Maxx series trucks are famous for. The WideMaxx is fully tuneable for the track or extreme bashing with up to 10 shock-mounting positions, adjustable front caster angle, front and rear toe, and front and rear camber angles.

Oil-Filled Ultra Shocks

Traxxas oil-filled Ultra Shocks are fully tuneable for race-inspired performance. The spring pre-load is adjustable via precise clip-on spacers making it easy to know that each shock is adjusted to the same spec. Rubber pressure bladders prevent air pockets and foaming common with bladderless designs. Double O-ring seals in the shock body keep shock oil in and air out for consistent performance pack after pack.

Tough Composite Components

Improved body mounts, universal Maxx differential housings, strengthened gray composite chassis, and steel reinforced bulkheads increase durability for hardcore bashing.

Hex Hardware

Pro-quality, high-grade, metric hex-drive hardware is used throughout for extra strength and easy maintenance and repair. The black-oxide rust-resistant finish provides a high tech look and feel.

Rubber-Sealed Ball Bearings

Precision rubber-sealed bearings offer the ultimate in super low-friction performance and maximum protection in dirt and nitro environments. They are used in all exposed locations on the truck and are virtually maintenance free.



ProGraphix Bodies

The new extended wheelbase E-Maxx body comes fully trimmed and painted. Decals are also applied to save time and get you driving just minutes out of the box. Traxxas’ ProGraphix bodies are the hottest looking bodies around and are only available on Traxxas Ready-to-Racemodels. Available in red, blue, black, and white.

Over 4" Inches of Center Ground Clearance

The unique E-Maxx chassis design offers maximum center ground clearance (over 4 inches) to eliminate the high-centering and chassis dragging that plague flat-chassis monster trucks. Plus it maintains that tall, authentic monster truck look.

Features

• 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

Specifications

E-MAXX (#3903) SPECS

EVX-2 SPECIFICATIONS

Click here for more Information

Manual

• 3903 Manual French (E-Maxx)
• 3019R Operating Instructions (EVX-2 ESC with LVD)
• 3903 Manual (E-Maxx)
• 3019 2008 Operating Instructions (EVX-2 ESC)

Instructions

• 3905/3903, 5605/5603 Optional Gearing Note
• Differential Rebuild Instructions (Covers #5379X, 5380, 5381, 5382X, 3978)
• 3395 Castle Creations Mamba Monster Installation
• E-Maxx Two-Speed Instructions (#3903, #3908) (covers part #3998)
• E-Maxx Voltage Sensor Installation
• E-Maxx Temp Sensor Installation
• E-Maxx Spur Gear Magnet Holder Installation
• E-Maxx RPM Sensor Installation
• Traxxas Power Cell Battery Application Guide (Counter Mat) (LiPo and NiMH)
• 5143R Toe Link Tubes (Rr, Aluminum) Instructions
• 4980X Differential Housing Addendum
• 4945 Steering Bellcrank Instructions
• 3927X Extended Battery Hold Down Instructions
• 2065 Micro Servo (Waterproof)
• 5141R Toe Link Tubes (Fr, Aluminum) Instructions
• 4975 Wheelie Bar Instructions
• 4962 Big Bore Aluminum Shock Instructions
• 4957R Progressive Springs Instructions & Info
• EZ-Set Tips Card for EVX-2 ESC (#3019) and EVX-2 Marine ESC (#3020)
• 4091 On-Board Temperature Meter Instructions (for TRX engines)

Parts List

Exploded Views

• 3903 Transmission Exploded Views (E-Maxx)
• 3903 Rear Exploded Views (E-Maxx)
• 3903 Front Exploded Views
• 3903 Driveshafts Exploded Views (E-Maxx)
• 3903 Chassis Exploded Views (E-Maxx)

Miscellaneous

Watch A Video of This Model

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Traxxas 1/10 Scale E-Maxx 4WD Electric Monster Truck - 3903 TRA-3903$449.99Color: - Please Select One -RedBlueBlackWhite

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