exhaust bolts rotting

[mobile mouse]

Hi,


The original bolts on my 2003 fazer 600 rotted after 7 years, I replaced them when I changed the original exhaust for a SS replacement.
These replacements could be A2 or A3 grade steel and after 3 years these too are starting to rot.


Does anyone know if the A4 flange nuts are any better, they are called marine grade.


Or should I go back to the original yamaha nuts.


http://www.yamahascooterspares.co.uk/spares/partImage.asp?GPN=901790666800&uid=0


Not sure what grade of steel these or the original nuts are.

Spotted some TI-6AL-4V (GRADE 5) TITANIUM flange nuts are these better all round.



Any help would be appreciated.

[Fazerider]

I put A2 stainless dome nuts on mine 5 years ago and they're still fine. The dome keeps the road salt from rotting the end of the stud and at about £2 for ten they're better value than titanium.