Haven't used these and I will say I like the reviews. But just a heads up to people. A fellow racer hit the dirt hard and got a bad concusion after his Composi-Flex bars sheered off on the throttle side 1 inch from the bar clamp. He just landed from a pretty smooth double and the bar just snapped in 2. Makes you think you need to replace these often. He said he had had them for a year and a half or so.