I replaced the stock bar on my bike when I added bar ends since the bar ends wouldn’t fit the original bar. I think the original would have needed an adapter or something, so I opted for the new bar. I did cut off a portion of each end to get the correct width. I just used a pipe cutter. I was concerned about my reciprocal saw skills ( or lack thereof ) and didn’t want to cobble up the ends, thus the pipe cutter gave me a nicer cut.