Yamaha EXUP

[mecht1]

I HAVE A FZR400RR, I need to replace the exup valve bushes. Does anyone know what material I can use? thanks.

[Grumph]

I HAVE A FZR400RR, I need to replace the exup valve bushes. Does anyone know what material I can use? thanks.

Cast iron. For a source, talk to an engine reconditioner who makes valve guides for vintage engines. George Calder would be a good starting place.

[SaferRides]

I have a spare set made for a 99 R1 in the UK. I thought they were made from steel, but let me check.