could anyone tell me the thread size of the rear manifold nuts as mine are rusted to hell and no where has new ones managed to order a brand new set studs and nuts for the front cylinders.

Kennon

It's an 8mm flange nut according to the fiche. 90301-MR8-000. Somewhat oddly, DSS say it's a 5-7 day wait for an order, but their description has the '!D' tag on it, which means Honda have discontinued it. Perhaps this just means the Honda still have some stock of them....

think I'll just replace them with SS ones the ones that were on the bike had rotted so much that one had to have a 11mm socket forced onto it to get it to turn, I called DSS they could only order in 2 for me, I ordered the front studs and nuts but with two studs still stuck in will have to get them drilled out and carefully check the thread, I've got a titanium threaded bar and SS nuts to make studs for the bike thanks the Simon RC51 for those.