New Features 2-Wheel drive 4X2 transmission thats upgradable to 4X4 (using 4X4 BOOST Transmission Upgrade Set) Spektrum 2.4GHz SLT2 transmitter with 50/75/100% throttle modes Spektrum SLT 2-in-1 40A ESC Receiver Spektrum Smart 8.4V 3300mAh 7-Cell Hump NiMH Battery included Spektrum S120 USB-C Smart Charger included AA transmitter batteries included Additional Features MEGA 550 12T brushed motor Spektrum S650 waterproof digital servo offering 84 oz-in of torque Metal internal geared diff 1.35 module input and main diff gear teeth Strong composite chassis with extended height dirt defenders Impact absorbing bumpers Steering system with stone clearance Easy-access modular design power, diff, and electronics modules can be removed for maintenance quickly and easily Double-wishbone suspension front and rear for great handling Vented dBoots tires that disperse water for improved durability 2-year limited see website for details Overview If youre looking for your first hobby-quality RC basher vehicle, nothing else compares to ARRMA 4X2 BOOST 550 MEGA Brushed 2WDs. Its not just the characteristic ARRMA speed and durability that sets them apart. Based on the proven ARRMA 4X4 platform, ready-to-run 4X2 BOOST 550 MEGA Brushed 2WD vehicles can be upgraded easily to 4-wheel drive and 3S brushless power whenever youre ready. Whats more, they also offer great value. Even without those upgrades, the SENTON 4X2 BOOST 550 MEGA Brushed 2WD short course truck can reach speeds of 30+ MPH in optimum conditions using optional gearing