Aluminum heat sink Cooling fan 55+ MPH out of the box using single 4S LiPo battery 60+ MPH with optional gearing (sold separately) and single 4S LiPo battery Traxxas Stability Management Helps prevents spinouts and loss of control Adjusts from off to 100% assistance from the transmitter TQi 2.4GHz High Output Radio System TQi 2.4GHz transmitter Traxxas Link enabled TQi 2.4GHz 5-channel micro receiver (#6533) with fail-safe security and integrated telemetry ports 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 Telemetry-ready 5-channel micro receiver Clipless Body Mount System Quick one-hand installation and removal Uses pivoting rear latch mechanism Eliminates body posts and clips Reinforced for extra protection against tearing Drivetrain Full-time shaft-driven 4-wheel drive Torque-Biasing Center Drive absorbs shocks and distributes power 17mm keyed wheel hex with 5mm nut Sealed, silicone fluid-filled diffs with large module ring and pinion gears Heavy-duty Cush Drive Extreme-duty telescoping driveshafts Splined aluminum center driveshaft Secure Motor Mounting System Precise, fixed gear mesh adjustments Motor retention separate from gear mesh Full-length motor cradle New Modular Composite Chassis Modular chassis design interlocks with front and rear bulkheads Absorbs and distributes impact energy Easy to service and access components Driveline is sealed in the chassis to keep out dirt and grit Easy Battery Access Battery is protected deep in the chassis Battery hold-downs pivot for easy access More secure than conventional retention systems Heavy-Duty Steering Bellcranks and Servo Large-scale high-output steering servo 285oz-in of torque 0.18 sec transit speed New mounting system to fully support case Heavy-duty double-shear bellcranks Suspension Engineered to optimize suspension travel and steering angles All critical suspension points have double shear strength Steel pivot balls C-hub and steering block geometry maximizes steering angle Fixed, high-strength camber and toe links Steel upper and lower tie bars Full contact sealed bearings used throughout driveline New GT-Maxx Shocks Machined aluminum threaded body Extra-large bore and capacity Large-diameter damper shaft Lower seal cartridge with dual X-rings Adjustable upper spring retainer Plastic shock caps with pivot balls Lower spring perches bolted on Bumpers Tough energy absorbing front and rear bumpers Lower front and rear skids for impact and abrasion resistance Integrated nerf bars for side impact resistance Wheelie bar with integrated carry handle Wheels/Tires Tough 2.8” wheels with keyed 17mm hex receptor Large 5.5” all-terrain dual-diameter tires 1-piece foam inserts Pre-glued and ready for action TSM rated Maxx 4S Specifications Length: 21.60 inches (549mm) Front Track: 14.50 inches (368mm) Rear Track: 14.50 inches (368mm) Ground Clearance: 1.92 inches (49mm) Weight: 9.7 lbs (4.4kg) Height (ride): 9.12 inches (232mm) Wheelbase: 12.96 inches (329mm) Shock Length: 4.89 inches (129.2mm) Tire Diameter: 5.51 inches (140mm) Wheels Diameter: 2.8 / 3.6 inches (71 / 91mm) Speed Control: Velineon VXL-4s Motor (electric): 540XL (2400 kV) Transmission: Single-Speed Overall Drive Ratio: 11.86 (24 / 50) Differential Type: Sealed, hardened steel bevel, limited slip Gear Pitch: Module 1.0 Chassis Structure/Material: Composite Modular Tub Brake Type: Electronic Drive System: Shaft-driven 4WD Steering: Double-shear bellcrank Radio System: TQi 2.4GHz Transmitter with TSM receiver Servo: Torque: 285oz-in. Top Speed: 60+ MPH with 4S LiPo battery and optional gearing (sold separately) Skill Level: 4