Thanks for the info....It seems it's both complex and hard to find rather than a simple twist grip manufactured 'backwards' so to speak....
I'm hoping the other solution to the problem I'm about to try will work out OK...I've got a pal who, for medical reasons, needs to have a left hand throttle if he is to keep riding...Ian
Ah! I'm with you now. I thought you were actually working on an Indian. A different food for thought. So far I can only think of things like pre war BSA which had an internal pull twist grip on both sides (ign on left) The bar would need to have the correct slot milled in and the parts are again difficult to find and expensive. Ron