i was wondering if any of you had the wb rev limiter installed on your 400ex or knew much about them i was wondering what all they did and if they voided your warranty and if they were very safe to put on your quad also i was just gonna ask someone told me to only go w/slip on and not complete exhaust if i wasn't going to be doin heavy motor mods i just wondered if that was right or if full exhaust would still make that big a difference

 

I've been told that a full exhaust on a stock 400 is not needed but if u were to put a rev limiter on it than a full exhaust would be probbaly help