Here is an off-road Go Kart made to give your kids a fun ride outside. The MotoTec Mud Monster 98cc Go-Kart is made for riders 13 and up, weighing under 150lbs. It has a powerful engine, roll cage safety bar, an adjustable seat, and metal throttle and brake pedals. It has a top speed of 25mph.
This rugged go kart weighs 155lbs and has a wheelbase of 36 inches. You can find out more about it here.