Up until recently the stock bars have given me no trouble. I purchased the bike late last August and have put nearly 8k miles and 10 states on it.... Mostly tarmac. However, the last month has been almost entirely off road .. A few hundred miles and starting to get wrist pain, especially my throttle hand. I've been focusing on relaxing my grip which seems to be helping. I'll find out next week when Im off for a week to explore the smoky mountain 500 and surrounding areas...adjusting the route to stay off pavement and camp free. I'm hoping staying more relaxed will continue to help.