I used Hagon progressive with their recommended air gap and standard fork oil. Adjusted the sag to 23mm and all is fine.
My rear brake pads came today so as was able to go for a ride to try out my forks...I bought wilbers springs from Revs after reading a previous post on here.The thing is, when i rang revs and talked to john, i just said i needed something doing with the front end and he recomended Wilbers springs... He asked my weight and what type of riding i do..Because he had asked about my weight i thought he must be matching me up with linears..When i opened the box i found out i had been giving progressive, then after looking at the Wilbers website found they only do progressive for the fzs 600...The progresive part of the spring is very small, about 50mm where as the standard yam one is more than double that..I went ahead and fitted them anyway and i am pleased i did, there f***ing great.The feedback through the bars is very good. You can really feel the front end pushing down searching for grip, it feels much more agile when you flick it over and the front end dive when has completely gone.These springs really suit my riding style,i didnt need linears after all!Perfect for a road going bike imo
Here you go. https://www.wilbers-shop.de/en/Motorcycle/Yamaha/FZS-600-Fazer-RJ02-wilbers-4/Wilbers-Fork-Spring-Zero-friction-progressive.html?cur=1?manufacturer=90v40bd08f64cf352173769a2f312731&year=2003&catname=4bd1558943f8720eb7a51f3debac61ec
Why do the 2 Springs look quite different (pictured above)? - Their closely coiled sections are far from 'even', with the Springs side by side - is there good reason for this?