Recommendations for engine protection bars and seat modification please

[River Valley]

Thanks fazersharp. That's one of the reasons I wanted to fit highway pegs to the crash bars, as they can be folded up and I'd only fold them down for use on relatively straight motorways, on long hauls, where I most need them. That image has given me an idea though. If the frame of the bike at the area where the crash bars bolt on is around 25-35mm I could possibly attach the highway pegs collar directly to that, in which case I wouldn't need crash bars and the highway pegs would maybe be a little higher and not stick out as much.
Can anyone please measure their frame diameter for me at that point? Ta.