Features:

• Miniature electric off-road dirt quad with authentic quad geometry
• High-torque gear ratio provides excellent climbing opportunities
• Variable-speed, chain-driven electric motor is quiet and powerful
• Terrain-tracing droop-travel rear suspension delivers smooth ride
• Twist-grip throttle acceleration control; supports up to 120 pounds

Editor Reviews:

Product Description:
Ready for rugged, off-road adventures' The Razor Dirt Quad combines high performance with realistic detail and styling.

Features:

• Powered by a 350-watt motor
• Reaches speeds up to 10 mph
• High-torque drive train with built-in torque reducer produces incredible off-road and climbing capabilities
• Constructed from shatter-resistant plastic fairings on a powder-coated tubular steel frame
• UL listed; requires two 12-volt rechargeable batteries and charger, included
• Eight- hour charge time provides 40 minutes of riding time
• Terrain-following droop travel rear suspension
• Handlebar steering with hand throttle and brake controls
• Large pneumatic tires
• Rear disc brake, padded seat and front "brush bar"
• Rear carry handle and safety flag
• Measures 50"L x 30"W x 20"H
• Maximum weight capacity: 120 pounds

Amazon.com Product Description:
Kick up a fuss with the Razor Dirt Quad, a miniature electric off-road quad that's perfect for trail riding. The compact vehicle--which supports up to 120 pounds--offers such features as authentic dirt quad frame geometry, a high-torque gear ratio that provides excellent climbing opportunities, a terrain-tracing droop-travel rear suspension that delivers a smooth ride, shatter-resistant plastic fairings, and a powder-coated tubular steel frame that's durable in all weather conditions. Best of all, the variable-speed, chain-driven motor is both super quiet and powerful, helping you zip up the trail in a hurry without disturbing the locals. As a bonus, the Dirt Quad can store either horizontally or vertically depending on your space.

Key Features:

• Powered by a 350-watt motor
• Reaches speeds up to 10 miles per hour
• High-torque drive train with built-in torque reducer produces incredible off-road and climbing capabilities
• Constructed from shatter-resistant plastic fairings on a powder-coated tubular steel frame
• UL listed; requires 6-volt rechargeable battery and charger, included
• Eight hour charge time provides 40 minutes of riding time
• Terrain-following droop travel rear suspension
• Handlebar steering with hand throttle and brake controls
• Large pneumatic tires
• Rear disc brake, padded seat and front "brush bar"
• Rear carry handle and safety flag
• Dimensions: 50 inches long by 30 inches wide by 20 inches tall
• Maximum user weight capacity: 120 pounds

Rating : - Awesome quad, safe, clean, durable, quiet and fun!
Have had this for over a couple years and it is still going strong.
The frame is plenty strong to hold nearly anyone, the motor is a bit weak for anyone over 100lbs or so but works great for kids.

Although listed as "Reaches speeds up to 10 miles per hour" you would be hard pressed to get it over 8. That speed has been enough to keep my kids happy, faster then they can run long distances to visit the neighbors via the "off road" path, but slow enough to limit any injury due to an accident.

As they grow older I would like to see an upgraded version with a 650Watt motor instead of the 350Watt that would go about 15mph. After all, Razor has a line of dirt bikes with 350, 500, and 650W motors.
Perhaps a DIY project is necessary here.