Does anyone know the size and pitch of the front header bolts or where I can get replacements? I'm not using the Ducati cheese bolts with copper nuts again!
only guessing but if they are M6 then are common to many cars/bikes usually with coarse pitch. Hopefully someone will post with a source for good studs but alternatively If you want the best then you could try and seek out some genuine turbocharger studs in the right length as these will outlast the lot as far as corrosion goes. I would still use double height brass nuts personally if there was room.
