Bestbuy offers GoTrax - Everest Electric Dirt Bike with  50 mi Max Range & 53 mph Max Speed - Gray for $5499.99 (orig. $6499.99) with free shipping.

Product Description:
Feel like you're on top of the world. GOTRAX's most powerful ride has arrived. The Everest Electric Dirt Bike. Built with an incredible 8000 Watt motor, you will have no problems tackling any hills whether they are in the outdoors or on the track. You'll also notice a much faster acceleration time which should help you with those timed laps. Ride off road and discover the power of the Everest. 

• Max speed
  Reach a top speed of 53 mph in a moments notice thanks to a powerful 8000W motor. Our highest watt electric motor ever.
• Battery
  A 72V 30aH lithium-ion battery can take you up to 50 miles per charge so you will have plenty of time to rip the Everest around the track.
• Full suspension
  Enjoy smooth, easy riding thanks to a front and real wheel suspension system on top of pneumatic off-road tires.
• Dual braking
  Control your speed and slowdowns for those tighter turns with our dual braking system. Safe, secure stops are especially important when riding around others.
• Additional features
  Mutliple Speed Mode, LED Headlights, LED Digital Display, Mudgurards, and so much more await you on this electric dirt bike from GOTRAX.
• UL2849 compliant
  Tested and Certified to UL2849 Safety Standard
• The purchaser and rider of this product are responsible for knowing and obeying all state and local regulations regarding the use of this product. It is highly encouraged that you read and follow the product instructions including all safety precautions and use protective gear.