Re: Hi... from Australia
I have done it with and with out. The lil nub thing can be broken off if you choose not to drill a hole for it. But have found it is better to drill. Not all that hard with a drill press but a real pain with a hand drill. Is an optional thing. If you do drill the hole, just use the throttle to line up where the hole should be and mark the spot with a sharpie or magic marker. Some handle bars will have markings already but never seem to be close enough to the end of the bar but have the angle right.