The big boss fat bike rear wheel drive 5000w fat bike is ready for all type of terrain. Especially Sand and Snow. At 5000w of power this bike with the higher torque motor can reach a top speed of 42 mph with a range of 40-50 miles at 20mph avg. speed. This Black on black BIG BOSS is ready to go. comes with 4amp charger and all that you see in video.