Part of any ignition system overhaul will include replacing the spark plugs - make sure they are 100% correct for your model!
Buying your plugs from CMS will mean, provided you have specified the correct part number, the diameter, the reach and the running characteristics will be 100% correct for the model to which they are specified.
Add as many parts as you like to your shopping cart and pay just one fixed price shipping cost. CMS is the supplier of choice for most enthusiasts when purchasing high quality parts for Japanese motorcycles.