They're handlebars so I don't know that there's much to comment on in the way of "performance", but they do look good and installed fairly easily. Had to drill one small hole in each for my '07 GSXR controls but that was easy. Measure twice, drill once. They ended up being wider than the stock bars due to control/steering clamp interference. Not a big deal though. To be expected from an aftermarket universal "racing application " type part. I do really like the adjustability of the sweep. Played with that for a couple weeks before finding where I liked them the best. Very easy to adjust if you have an inch pound torque wrench. Still trying to come up with a permanent way to mount the brake fluid reservoir. Zip tied on at the moment.