Handlebar Inner Diameter?

[nightwolf0215]

I am contemplating a K bike build that involves using bar end turn signal. I can't for the life of me find out the inner diameter of the handlebar. The outside diameter seems to be 22mm, but I have no idea what the inner would be. Does anyone know? I don't want to poke a hole through my grips yet as I am not sure about the build yet. :)

[kennybobby]

On my K75 i measured 21.86mm OD and 15.65mm ID at the bar end using dial calipers. 

Don't know who sets the standards for bars but they are really closer to 7/8" OD and 5/8" ID than a pure metric size.

[rbm]

Emgo bar ends won't fit on the OEM bars.  You might have to go for original Hella barend signals.

[Laitch]

How you could install Hellas.
Where you might find Hellas.

[nightwolf0215]

Thank you everyone! I didnt know about the Hella bar end signals, but I must look into it. They look really classy. The bar end signals I had in mind were the ones from motogadget, which is about twice as much. Wild price, but they should fit if the handlebar is pretty much standard. :)

https://www.amazon.com/gp/product/B0145Q60MG/ref=s9_simh_gw_g263_i1_r?ie=UTF8&fpl=fresh&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1&pf_rd_r=NZYWE9VHBQ0N7WVGCM42&pf_rd_t=36701&pf_rd_p=6aad23bd-3035-4a40-b691-0eefb1a18396&pf_rd_i=desktop