anyone done high-temp spray paint of downpipes

[keratos]

you could spray them but tbh they will still end up rusty. Mine get sanded down and resprayed every year they are just a really good breading ground for rust.  So if they dont look like they need doing now then i probably wouldnt bother.
studs/screws are prone to snapping as with any bike, but usually a week of spraying something like WD40 on them first will help (mine have never snapped doing this). Also if they wee changed recently then they shouldnt be to bad to get off.

ok, thanks for the tips. I guess I shall not bother with the hassle then, I thought by spraying it would help; I perceive it did on my Kymco maxi-scooter exhaust and I've done this every year but it is far simpler and quicker to do this as it is a single cylinder and the bolts are not rusted.

Cheers for the advice.

When they do rot I will go stainless - seen a set of 4-1  on fleabay for £199 from M&P who I have bought quite a bit of kit from over the years and no probs http://www.ebay.co.uk/itm/Yamaha-FZS600-...3ce3af56cf