Youth Race Quad! 2006 YFZ450 chassis with KX250F engine. Athena 290cc Big Bore, Motor fully inspected and top end rebuilt in Sept 2018 by Rage ATV Racing. Head porting and valve job done at same time. Less than 30mins on engine top end rebuild. Includes factory cylinder. RealTec shocks serviced 2 years ago and setup for 145 - 165lb rider. Has Laeger 6” lowering custom subframe. This race quad is perfect for the Youth All Star class and Schoolboy class in the American Powersports Championship Series. It's also the quad for many youth classes in the ATVmx National Championship.