can someone tell me if i can get a release bearing for the mt75 gearbox that will be 20 or 25mm longer than the standard one.
looking for an alternative to westfield.
thanks.

only by making your own.

ie 19-20mm spacer on the mt75 bearing.

Do a search, it has been done, but not by me

check this link and you will need to know your sizes

http://www.midlandbearings.com/index.html