Accuracy and performance. Accurate rates to within 2 percent. High stiffness-to-mass ratio, shot-peened, heat-treated and preset chrome silicon steel. Choose from varying spring rates to suit your biking needs.This item fits the following models: 2002 Kawasaki KX1252002 Kawasaki KX2502005-2007 Kawasaki KX2502007-2012 Kawasaki KX450F2005 Yamaha YZ1252005 Yamaha YZ2502005 Yamaha YZ250F2005 Yamaha YZ450F2010-2013 Yamaha YZ450F

Accuracy and performance|Accurate rates to within 2 percent|High stiffness-to-mass ratio, shot-peened, heat-treated and preset chrome silicon steel|Choose from varying spring rates to suit your biking needs

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