Oxford Lever Guards & Hand protectors

[Grumpy Goat]

Removing the OEM bar ends is literally a case of undoing the bolt at the end. The spacing difference is because the threaded hole projects beyond the end of the grip by a fair amount (maybe 15mm?).  
...

Ahhh .. OK, so it is the block with the threaded hole that prevents the lever guard from going in further when the expanding assembly is removed leaving you with just the long bolt. That block is probably a press-fit piece and cannot [easily] be removed so I think that the additional spacer approach is easiest.

Having done some measuring yesterday I think an M16 spacer (30mm diameter with a 17mm diameter hole in the middle) will do the job. I have ordered some and will report back... 

Great. Would like to see the finished product.