In 1979, I bought a brand new Suzuki GS 1000. I had it two days before I changed the handlebar and grips. The K&N bar was lower, wider, and had the grips straight instead of turned down.
Unless you take your bike to the track every day, you probably want a handlebar that is higher, wider, and has grips that are straight instead of turned down. The October issue of Motorcycle Consumer News tested a Spiegler LSL Handlebar conversion www.spieglerusa.com
. It allows a regular handlebar to be installed on clip-on triple clamps. Sort of like the handlebar on a FZ1 compared to the clip-on's on a R1.
The tester used it for more than a year on a 95 GPz1100. His hands no longer became numb, and his wrists no longer ached. Also said it was more relaxing and comfortable. And with more leverage it resulted in quicker turn-in. It's like having your cake and eating it.