I bought another stock throttle tube...its cheap...and installed a Right grip from Kuryakyn Black ISO 6340 (Universal 1 inch) on my Street 750. The grip set came with spacer (insert inside grip) which I had to use a part of cause the grip was longer than stock. Harley Davidson decided to make the throttle tube the size of a 1 inch and then install it on a 7/8th handle bar for the Street 750 and 500. You other option would be to replace the stock throttle tube with a third party one so that you could use almost any 7/8 grips without having one side look lopsided.
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