Gilera rear wheel bearing

Hi can anyone point me in the right direction for a new rear wheel bearing that is in the exhaust bracket of a gilera 125 vx runner,thanks in advance.

 

Try and measure the dimensions of it

 

if you have the bearing out then 'most' bearings have the size code on the side of the outer race

 

Knock it out the housing, measure the inside (hole), measure the outside diameter, measure the thickness, go to simply bearings.co.uk,
put the sizes in the boxes on the top of the page, PRESTO!
You need a sealed bearing, not an open one.

OR

Knock the bearing out the housing, clean it, use a magnifying glass to read the numbers on it, e.g. 6204zz, and use simply bearings to get a new one.

Just done a quick search. This should be the one; 17 x 47 x 14
But check your sizes first.
Here you go:
https://simplybearings.co.uk/shop/advanced_search_result.php?keywords1=17&keywords2=47&keywords3=14

 

Thank you so much for all your answers.