Where did you see 90days? Our standard warranty is 120days. Does not make much difference in most cases anyway. Most manufacturer errors show up pretty quickly. Things that break after 30days are usually things cracking from impact, wires breaking off, or a user error like pluggin the battery in backwards. We are pretty easy to deal with in most cases and give great deals to those that be honest and admit they broke it. I do not think we have had any service where the warranty period came into play. You do not see much bad press about our customer support and it would be there if we had issues and unhappy users.
1/8 may be a different story since the units will be literally hammered on. Good installs and routine checking of solder joints and wires make for a happy race day
Tekin Prez