Does anyone know where I can get a couple of these from? RC45's use them but I'm not sure if it's an HRC kit part or standard. Either way I can't find a part number. Can anyone help please?

Would you not have top drill and rivnut the frame.

Yes you would, use similar system on RS250 but opening is welded into the frame, will watch this with interest, if not matin may be able to get some made, never thought on this but top idea.

Yeah, not worried about drilling the frame. Aly, should nothing come up here, If you could get something sorted out obviously count me in for a pair

Used the Prilla 125 or 250 ones on me bike..