Specifications:

Length: 779 mm
Width: 540 mm
Ground clearance: 107 mm
Weight: 9.5 kg / 11.39 kg with two 4s 6700 mAh LiPo batteries
Height (ride): 355 mm
Wheelbase: 480 mm
Shock length: 187 mm
Tires (pre-glued): Belted Sledgehammer® 8.4″ x 4.0″ (203 mm)
Wheels: 4.3″ x 5.7″ (110×145 mm)
Wheel Hex Size: 24mm splined hex
Speed Control: Velineon® VXL-8s™
Motor (electric): Velineon 1200XL
Transmission: Single-speed
Overall Drive Ratio: 8.11 (stock, out-of-box)
Differential Type: Sealed, hardened steel bevel, limited slip
Gear Pitch: Module 1.0
Chassis Structure/Material: Composite nylon tube
Brake Type: Electronic
Drive System: Shaft-driven 4WD
Steering: Aluminum bellcrank
Radio System: TQi™ 2.4 GHz transmitter with factory-installed wireless module
Servo: Torque: 450 oz-in speed: 0.17 sec/ 60 degrees (6.0 volts)
Top Speed: 80+ kph with two 4s LiPo batteries and optional gearing (sold separately)
Skill Level: 6
Battery Tray: 197 x 52 x 44 mm
Required Batteries: 4 “AA” (transmitter) and 3-cell LiPo battery (x2) or 4-cell LiPo battery (x2)
Motor Specs:

Type: 1275 kV sensorless brushless
Weight: 665 g
Length: 110 mm
Diameter: 48 mm
Connector Type: Traxxas 6.5 mm bullet connectors
ESC Specs:

Input Voltage: 8s LiPo (max 33.6 volts)
Case Size: 58 x 72 x 46 mm
Weight: 215.5 g
BEC Voltage: 6.0 volts
BEC Continuous Current: 10 amps
BEC Current Peak: 20 amps
Motor Connectors: Traxxas 6.5 mm bullet connectors
Battery Connectors: Traxxas High-Current Connectors
Power Wire: 10-gauge Maxx Cable
Ports: RX Input, auxiliary fan, accessory port
What’s In The Box:

X-Maxx Ultimate, Ready-To-Race model with Traxxas Big Block™ brushless motor
VXL-8s waterproof electronic speed control with integrated telemetry
Quick Start Guide
TQi 2.4 GHz radio system with factory-installed wireless module
High quality maintenance tools
What You’ll Need:

Batteries : IMPORTANT: X-Maxx Ultimate requires the use of LiPo batteries equipped with Traxxas High Current Connectors. Traxxas 4-Cell, 6700 mAh or greater, Power Cell LiPo batteries with iD are recommended (part 2890X).
LiPo Balance Charger with iD® : Traxxas EZ-Peak® Live Dual 4s-capable charger is recommended for easy and fast charging performance (model 2973).
AA Alkaline Batteries : Four AA alkaline batteries for the transmitter.