what is this trailtech electronic speedo?
Except for the very expensive factory DRZ400SM wheels, no motard wheels are set up to run with your existing speedo. We highly recommend electronic speedos like the Trailtech Vector, Vapor or Endurance that just use a magnet on the disc and a sensor. We actually sold off our standard speedos on Ebay which more than paid for the top model Trailtech which has tacho, water temperature and dozens of other features built in for only $155. Alternatively you can get the budget Endurance model for around $90. These are getting cheaper each year as the price of electronics drop; check Ebay or buy direct from the Trailtech site here.