The Ultimate Monster Truck. TRX® 3.3 Racing Engine • 60% more peak power than    the TRX 2.5 • Nearly 50% total increased    horsepower. • PowerTune™ cooling head    promotes even heat distribution. • Composite slide carb. • Multi-port rear exhaust. • EZ-Start® push-button    electric starting. • Easy-revving broad powerband    pushes Revo well beyond 45mph!   Limited Slip Differentials • Sealed design allows precision    tuning with Traxxas Diff Lube. • Silicone seals provide superior sealing. • Refined design and manufacturing    produces smooth, durable gears. • Rugged case allows precision    ring and pinion alignment.   EZ-Start® Electric Starting Only the Traxxas EZ-Start offers the pure convenience of true one-handed operation and complete on-board, push-button electric starting. The Traxxas EZ-Start lights your glow plug and starts your engine quickly and smoothly at the push of a button. Traxxas’ exclusive Smart Start™ technology monitors critical starting functions, automatically sensing and diagnosing potential problems for troublefree engine starting every time! LEDs provide realtime status, even alerting you when a glow plug has failed.   OptiDrive® Electronic Shift Module • Microprocessor senses vehicle speed and    optimizes forward and reverse shifting. • Allows constant drive engagement for    smooth, responsive acceleration. • New failsafe function returns the servos to    neutral if the radio signal fails. In addition,    if the on-board battery voltage drops too low,    brakes are automatically applied, alerting the    driver that it’s time to stop and recharge. • Allows a lighter transmission with fewer    moving parts for reduced inertial mass    and greater torque handling.   Super-Duty Sealed Driveshafts • Rubber sealed to keep out dirt for    consistently smooth performance. • True, constant velocity U-joint design    allows huge deflection angles. • No metal-to-metal friction to cause    binding and wear. • Large diameter, built to last. • U-joints eliminate drive pins and cups    that could bind or disengage.   Torque-Control™ Slipper Clutch • Center ball bearing. • Wide range of adjustment allows    precision fine tuning. • Semi-metallic friction pads provide    smooth engagement. • Fan-cooled alloy pressure plates draw    heat away from the spur gear. • Change spur gears without altering    the slipper adjustment.   Extended 3D Semi-Monocoque Chassis • Extended by 30mm for improved stabilty. • Cut and formed 3mm, 6061-T6 aluminum. • Beautiful blue anodizing. • Integrated engine cradle and deep channel    design provide superior strength without    adding unnecessary weight. • New brace strengthens the chassis around    the engine mount • Cutout provides flywheel access for    aftermarket starter boxes.   Hex Hardware • Pro-quality, high-grade. • Metric hex-drive. • Extra strength. • Black oxide rust resistant finish. • High-tech look and feel.   GTR Shocks • Maintains consistent oil    temperature and viscosity. • Silicone X-seals provide superior sealing    with less friction than typical O-ring seals. • Volume compensating air bladders keep    out the air and stop oil foaming. • Equipped with convenient, threaded    spring pre-load adjusters.   Sealed Pivot Ball Suspension • Traxxas exclusive rubber sealed pivot balls    maintain factory smooth performance    even in the harshest environments. • Easy adjustment, proven    performance and reliability. • The heavy-duty axle carriers use large    diameter rubber sealed bearings for    ultra-smooth, and practically    maintenance-free running.   Maximum Travel • More suspension travel    than any other truck. • Advanced rocker system and    super-long suspension arms. • Over 120mm of suspension travel    with the long travel rockers installed. • Suspension travel is not limited by the    length of the shocks. • 60% more travel than the    legendary T-Maxx™!   Large Diameter Disc Brake • Provides powerful 4-wheel braking. • Molded alloy calipers. • Unique, semi-metallic friction    material reduces fade. • Large, 42mm cross-drilled steel rotor.   Pre-Glued Talon™ Tires • Wide, low profile design provides excellent    handling and reduced weight. • Pre-glued with installed foam inserts. • Soft compound rubber. • Compatible with the Maxx family. • Chrome Split-Spoke rims.   4" Ground-Clearance • High center ground-clearance. • Skidplates protect the driveline.   Two-Speed Transmission • Auto-shifting, two-speed in    forward and reverse. • Low rotating mass for quick,    high-revving acceleration. • Constant drive engagement is smooth    and responsive. • Sealed case protects the gears    and two-speed. • Optional close and standard ratio two-speed    gear sets.   Rubber Sealed Ball Bearings • Precision rubber-sealed bearings are    used throughout. • The ultimate in protection and low    maintenance in dirt & nitro environments. • Super smooth performance.   Low-Profile Fuel Tank • More consistent fuel pressure and flow    as the fuel level in the tank changes. • Built-in bronze sintered filter. • Baffled and sumped to prevent sloshing    and fuel starvation. • Integrated pull handle allows fast,    easy fuel stops. • Rubber mounts isolate vibration to    prevent foaming.   Micro Shifting Servo • Saves significant weight compared to    a standard servo. • Shifting mechanism uses a spring to    accelerate the shifting operation.   Dual-Chamber Metal Pipe • Better flow for more power. • Greater, more consistent fuel pressure. • Durable aluminum construction. • Reliable, bolt-on tubular header.