I have 130 hours on 2007 Ultra 250. Serviced every 25 hours, Supercharge Belt checked or replaced for OEM tension.

R and D says repalace wheel bearing every 20 hours. Is there any Kawasaki directive on doing this, or what should I be looking for?

Ultra 250X Bearing Rebuild Kit - Now Available

R&D recommends the inspection of the R&D Supercharger and Tensioner wheel bearings after 15 hours and replacing them after 20 hours.