100 Bike Rear View Mirror



Made for comfortably seeing behind yourself when cycling.
Adjustable and effective rear view bike mirror for looking behind to give you peace of mind when cycling.

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Visual efficiencyWide and convex for a better field of vision.3 dimensional adjustment
CompatibilityAttaches to the bar end of a 22.2 mm diameter handlebar.
Waranty2 Years
DimensionsL 11.9cm x H 8cm.


Information / Concept / Technologie
Main part : 65.0% Polypropylene (PP), Main part : 30.0% Glass - Mineral, Main part : 5.0% Styrene Ethylene Butadiene Styrene (SEBS) Screws : 100.0% Steel


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A good safety addition to any bike
Used for 3 to 6 months
A good safety addition to any bike you do have to slice the end off the rubber grips to fit it.
Rear View Mirror B'TWIN
Used for 1 week or less
I had already used 4 years this was direct replacement
Added safety
Used for 2 to 8 weeks
Excellent addition to the bike. You are very aware of what is approaching and can keep an eye on family members behind you.
Good product.
Used for 1 week or less
Excellent product. Ticked all the boxes.
Very Pleased
Used for 2 to 8 weeks
Delighted with product and the excellent click & collect service. WELL DONE DECATHLON
B’Twin Rear View Mirror
Used for 2 to 8 weeks
The connection to the handle bar was not tight enough and the angle of the mirror had to be continually adjudted to see the traffic.
Also, the mirror vibrated on the ride so the view of approaching cars was blurred.
Response of the brand
Thank you for taking the time to post a review of your mirror. I'm sorry to read that the mirror moved when in use. I gather you thoroughly cleaned and removed any debris from the inside of your handlebars before mounting them, if this is the case and the diameter of the tube is within the limit (22.2mm) then there may be an issue with your particular mirror. If you believe them to be faulty and not fit for purpose, please feel free to return them with your receipt to your local Decathlon store.
Peter, National Cycling Manager, DECATHLON
Road bars
Does this fit road bars?
Response of the brand
Thank you for your question.
You will need to check the internal diameter of your bars as this item is compatible with 22.2mm tubing.
Peter Lazarus, National Cycling Manager, DECATHLON
Matthew not found this answer helpful
Used for More than 1 year
You can buy a similar one from a well known motoring shop,for quite a bit more.These mirrors are cheap but very well made. Have one on all my bikes. And find them to be good quality and give a great rear view. Mirror can be closed inward for getting into gates and the likes.I only had any mirrors break due to crashes. But then again a few have survived even that.Would highly recommend.
B'twin rear view mirror
Used for 2 to 8 weeks
Really happy with this product and the whole online buying and delivery process
Btwin 3D rear-view mirror
Used for 2 to 8 weeks
Fits in end of handlebar, steady wide view.

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