Our yellow polyurethane cones are softer than the red ones for better dampening characteristics but still harder than stock to reduce handlebar twist. Four cones and four steel cupped washers included. These cones fit in all Ride Eng. KXF triple clamps as well as 2005-2014 stock KX250F; 2006-2011 stock KX450F triple clamps plus the D shaped pockets: 2015+ KX250/250x, 2012+ KX450/450x.