Got the 1 1/8th kit for our Protaper bars. The aluminum seems very rugged and so far worth the expense. After a few hours of frustration and a combo of BFH/Vise, I finally got em on. The smaller bar end insert was the only one that would fit. Had to bend the aluminum part where the bars attach near the triple to get it to square up. Worked well this morning making my way through some small alder and sumac patches down back. My only concern is the right side barend. I am unable to snug it up to the end of the bar so I left a 1/4 inch gap on each end. I am worried junk is going to get inside the throttle tube. If I snug it up so its flush, the throttle tube hangs up on the barend. Any suggestions?