How do I know the size of my motorcycle mirrors thread?

Like if this Guide is helpful

How do I know if these mirrors fit my motorcycle?    

If you're not sure, here are a few tips for you from KiWAV. ;)

Q: How do I know the size of my mirrors thread?
A: Please remove your current stock mirror and measure the diameter.

Q: How do I know the mirror thread pitch of my bike?
A: Most big bike mirrors thread is 1.25; there are certain BMW big bike mirror thread is 1.5. 
Find a screw that you're sure is 1.25 and try to compare the mirror thread of the two; if it fits, it will look like this.

1. Most big bike mirrors have 10mm standard/clock wise thread. (Honda, Suzuki, Kawasaki, Triumph, BMW, Buell, Victory, Aprilia, Yamaha, Ducati.........)
2. Some Yamaha/Ducati, however, have a reversed/anti clockwise thread and a standard/clockwise thread.
Reverse thread mostly ofund on the right hand side mirrors (view from the bike seat)
3. These are for Harley-Davidson only.

4. Check the bolt area of your bike, and the bottom of our mirror stem to see if they fit.
Have something to share, create your own Guide... Write a Guide
Explore more Guides