CatEye BM-500 MTB Mirror

Priced: $15.00 Rated:   - 4 stars out of 5 by 8 reviews.
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CatEye BM-500 MTB Mirror -

This left-side-mount mirror for mountain bikes gives you a wide-angle reflection of what's behind you.



  • Heavy-duty design mounts to the inside of your handlebar end; fits handlebars with an inside diameter of 16 to 20mm


  • Fully adjustable mirror is scratch-resistant and lightweight
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Average Price History: Price History
Review RatingNumber of Reviews
Dimensions:5.2 x 7.2 inches
Mirror mounting:Handlebar
Weight:86 grams

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CatEye BM-500 MTB Mirror Reviews:

Positive Reviews:

Very good mirror at an economical price.

My wife and I each have this mirror on our around-town hybrids. We're casual riders and need to be watchful of traffic coming up behind us. The best things about the Cat Eye are that it installs very easily, has a great field of view, stays firmly were you put it, and because of the stalk that it's mounted on, does not interfere with your left grip. The one weak attribute that we've noticed is that the mirror on my wife's bike popped out of the housing once, but we just popped it back in and there hasn't been a problem since then. I'm going to buy a couple more to keep as spares.
A2Wolverine at REI on 11/11/2009

Fine Mirror

This was quite easy to install. Bought it in the store to replace another brand mirror that had broken. I had my bike on a car rack. When we arrived at our destination, I put the mirror on--took less than 5 minutes, including time to find my screwdriver. Very easily adjusted to focus on what I needed to see. What more can you ask? 20-20 hindsight, I guess!
JBPHD at REI on 10/10/2013

I bought another one

I have had one of these mirros on my mountain bike for years without any failures. It is stable and exhibits minimal image loss from vibration. I put another one on my flat handlebar road bike that I use for commuting to work. It seems to be just as good as the first one. A good buy and an important safety feature.
Doc the biker at REI on 05/05/2011

Deserves its five-star rating

Bought this as a replacement for the failed inch-square 'Heads Up' eyeglass-mount mirror that I tried first. Mounts easily and firmly, doesn't wobble, holds its adjustment where you put it - gives an excellent big wide view.
heydogrun at REI on 06/06/2008

Negative Reviews:

Not durable at all

I bought this mirror to use while commuting. For the first month or so that I owned it, it was fantastic. It didn't vibrate too much (a frequent complaint I have heard about handlebar-mounted mirrors) and it was very easy to adjust while on the road. But then, out of nowhere, the part that houses the mirror snapped off while I was riding. I was hoping that it was a fluke, so I exchanged it for a new one. A week after installing the replacement, the mirror itself fell out of the housing.

This would be a perfect rear view mirror if it were durable enough to withstand being used on a bicycle, but as it is, I wouldn't recommend it.
mmoulai at REI on 08/08/2010

Not so much

I really wanted to like this mirror, but no matter how I placed it, I get a better view of my arm than the road behind me. It installed really easily, seems nicely, it can adjust very well, but the way the main arm is constructed, it puts it in a very poor position for being able to see behind me, which is the entire point of the mirror. I'm going to try a different one.
Boulder Biker at REI on 09/09/2009

mirror falls out

The mirror constantly fell out when riding. Finally I had to glue it in place. Not good!
Belowe at REI on 12/12/2010

Neutral Reviews:

Good field of view but...

I owned this for about a year before it broke. The field of view is good and the unit is solid, however,the pain for me was always maneuvering my bike into my bike-locker at work with this attached. I would have to de-adjust it each time. So look out for that if you use a locker for your bike.
Eventually the ball a socket joint broke, probably from the fatigue of continual adjustment.
The mirror plastic tended to pop out of the frame from time to time but it always just snapped back in with no problems.
DuncanM at REI on 08/08/2008