Some vehicles may have been removed from their box for display purposes only - they have NOT been turned on Traxxas Maxx® Ultimate Model 89087-4: 1/10 scale monster truck, fully assembled and Ready-To-Race® with TQi™ 2.4 GHz radio system, VXL-4s™ brushless power system, painted clipless body, and premium aluminum upgrades. What’s In The Box Maxx® Ultimate with Velineon® 540XL brushless motor VXL-4s™ waterproof electronic speed control with integrated telemetry TQi™ 2.4 GHz radio system with factory-installed wireless module Quick Start Guide High-quality maintenance tools What You’ll Need Battery: One 4s LiPo battery recommended for maximum performance. A 3s LiPo battery will operate the vehicle with reduced performance. NiMH batteries are not supported. Charger: Traxxas EZ-Peak® Live Dual 4s-capable charger 2973 recommended Transmitter Batteries: Four AA alkaline batteries Features High-Performance Aluminum Upgrades: 6061-T6 aluminum C-hubs, steering blocks, rear hub carriers, transmission cover, and motor cradle. Speed: 55 mph out of the box with a single 4s LiPo battery, or 60+ mph with optional gearing and a 4s LiPo battery, sold separately. VXL-4s™ Waterproof ESC: 3s–4s LiPo-compatible speed control with cooling fan, real-time telemetry, machined heat sinks, 10-gauge silicone wire, protection circuits, LED status lights, and waterproof design. Velineon® 540XL Brushless Motor: Long-format 4-pole 2400 Kv brushless motor with 5 mm output shaft, aluminum heat sink, and cooling fan. Traxxas Stability Management®: Helps prevent spinouts and loss of control, with transmitter-adjustable assistance from off to 100%. TQi™ Radio System: 2-channel 2.4 GHz radio with factory-installed wireless module, telemetry through the VXL-4s ESC, 5-channel receiver, fail-safe security, telemetry ports, and 30-model memory. Clipless Body Mount System: Maxx® Ultimate graphics with quick one-hand installation, pivoting rear latch, no body posts or clips, and molded reinforcements to help prevent tearing. Driveline: Full-time shaft-driven 4WD with steel CV driveshafts, torque-biasing center drive with aluminum housing, 17 mm aluminum axle adapters and wheel nuts, sealed fluid-filled differentials, heavy-duty Cush Drive™ with steel spur gear, and splined aluminum center driveshaft. Secure Motor Mounting: Full-length aluminum motor cradle with fixed gear mesh adjustments and separate motor retention. Modular Composite Chassis: Extended interlocking chassis with front and rear bulkheads, impact-absorbing design, sealed driveline, and easy service access. Battery Access: Extended battery tray accepts Traxxas’ largest 6700 mAh 4s LiPo battery, protects the battery deep in the chassis, and uses pivoting battery hold-downs for secure access. Steering: 6061-T6 aluminum steering bellcranks, 2085RL high-output metal-gear servo, double-shear aluminum servo horn, and heavy-duty servo saver spring. Suspension: TUBES 7075-T6 aluminum front toe links, WideMaxx® suspension arms, cold-weather impact-resistant composite material, double-shear suspension points, aluminum pin retainers, and steel pivot balls. GT-Maxx® Shocks: Threaded aluminum shocks with aluminum caps, TiN-coated damper shafts, adjustable aluminum spring retainers, dual X-ring lower seals, and bolted lower spring perches. Bumpers: Energy-absorbing front and rear bumpers, skid plates, integrated nerf bars, and wheelie bar with aluminum wheels. Wheels and Tires: 2.8" black chrome wheels with keyed 17 mm hex receptor and pre-glued Sledgehammer® extreme tires with 1-piece foam inserts.