The PY90 4 stroke is perfect for the junior rider who's ready for the next level. It has an 86cc, 4-stroke engine that has enough power to keep up to you on the trail but is still tame enough for the bigger first-time rider. This unit features a very easy, 4-speed, clutchless transmission and it's mono shock suspension is comfortable and fun to ride. This great little machine will keep them riding for years to come and best of all, it won't cost you an arm and a leg!