Great ball diff after a little bit of work.
I give this ball diff a 5 star rating because I added the Kyosho Route 246 plates. Without the 246 plates, I found I had to sand the original plates and rebuild the diff very often to maintain smooth and consistant action. After I replaced the plates, this diff is good to go baby! Take care not to over tighten. If you're not sure how much tension is needed, have an experienced fellow racer help you out. A ball diff is a good investment if you want to race your Mini-Z on a track.
Reviewed by: Dan Zaring from San Jose.