Overview Reviews Product Description ProX 28.SIS2402-2 Steel Intake Valve Spring Kit for Yamaha YZ250F 2001-2010 ProX 28.SIS2402-2 Product Videos Custom Field Product Reviews Write a Review Write a Review × ProX ProX 28.SIS2402-2 Steel Intake Valve Spring Kit for Yamaha YZ250F 2001-2010 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *