Up the top of this website is a bar that says: FIND YOUR BIKE Put the Make, Model and Year of your motorcycle into the dropdowns. Then click the GO button. There should be a box under the name of your bike which says calculate spring rates. Type in your weight (plus the weight of your riding gear) in kilograms, then click the Calculate button. Our database will calculate the ideal spring rate you need for your Fork Springs and Shock Springs. Please note that this rate is just a guide; if the calculator says 5.5, then a 5.4 or a 5.6 is fine. It is a ball park figure. Scroll down to the Fork Springs section or Shock Springs section in order to see which brands of springs we have that fit that bike, and which rates are in stock now. Unfortunately, if your motorbike doesn't yet have the calculate spring rates box under the title, then it is one of the thousands of bikes we don't have enough accurate info about yet and so haven't added to our database. Sorry! We may still get you some springs that will suit - we have thousands of variations of sizes and rates. If you know which diameter and length you need, have a look at our Fork Spring List for the front, or our Shock Spring List for the rear. Then give us a call and we'll find out the correct rate for your weight and organize them for you.