Mirrycle MTB Bar End Mountain Bicycle Mirror, Black

This is a pretty strong mirror. I crashed and it did not break any of the pieces, but the glass cracked. I was still able to use it until I could get home, then I replaced the mirror portion only. The mirror itself is a pretty good size compared to many others out there on the market. It seems flat to me. If it is convex, it isn’t convex by very much, but it is very clear and from the handlebars it affords a wide enough view to see behind you and a second lane over besides (at least) without having things appear too small. The mount stem fits inside the handlebar end so you will need to remove the end cap or cut the end off your handlebar grip. Inside the handlebar a screw attaching the mirror goes through two cylindrical pieces that are brought together on a sliding angled mating surface. As the screw is tightened the two pieces come together and slide over each other laterally to expand inside the handle bar until snug. The mirror arm screws into a threaded mount that is slightly hard fitting so there is no need for lock washers and once snugged it will not move due to vibration. I have been able to reach out and make precise adjustments in the mirror position as needed and it always holds in that position unless I bump it or physically try to re-position it. It comes with good illustrated assembly instructions and includes the appropriate allen key for tightening the hex head screws. I have used this mirror on straight across style handle bars and cruiser-style handlebars. On cruiser-style handlebars the added benefit of the mirror is that it also holds your grip in place as sometimes the grip will slide off in your hand on a cruiser-style handlebar. Mirrycle also sells just the mirror by itself as a replacement incase the glass gets broken.