These replacement kits were made to replace the cheaply made trihubs that are known for bearing & wheel failures and rubber separating from the wheel. Stealth kits replace the your original trihub with, 4 heavy duty wheels larger replaceable bearings, a larger diameter axle & outside wheel mounts. The Stealth kits now come with billet axle adjusters that replace the cheap cast ones that are prone to breaking.
We recommend bearing changes every 8 - 10 thousand miles.