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: 2006 Kawasaki KX450F2004 Yamaha YZ1252004 Yamaha YZ2502004 Yamaha YZ250F2004 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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