Вот что я откопал на форуме забугорном. Это есть ответ с сайта крис кинга:
Thank you very much for inquiring about the use of Chris King Hubs for 
trials riding. King's view on trials and the maneuvers associated with 
trials riding is that those activities are 
beyond the intended use of our 
hubs. Although many of our customers have had excellent results using our 
hubs in this specific discipline, some customer's results are less than we 
would like. 
Regardless of any existing public opinion, we feel that our hub's 
performance in trials environments does not live up to what a customer 
should expect from a King Product. Since we cannot guarantee perfect 
performance, we must discourage you, our customers from buying our hubs with 
this application in mind. 
If we ever offer a Trials Specific hub we will post that information on our 
web-site (
www.chrisking.com). You could also send an email to 
info@chrisking.com and ask to be notified if this situation ever changes.
Кто что думает по этому поводу?