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  • Member Contributer
Posted

This aught to be a sticky or its really obvious and I don't know where to look.  What are the Stock springs and oil in VFRs? Are they progressive?   Unless I know where I start, how do I know what to fit in order to move in the right direction.

Mine is a 2009 6th gen but everyone must have this question.

  • Member Contributer
Posted

There’s a YSS spring table in the download section 

 

 

  • Member Contributer
Posted

There is a table but its all Aprillia data, and it doesn't answer the original question which was about the base/OEM spring.

  • Member Contributer
Posted

Have a look at Brooks Barn, you’ll have to go through the models but the type and spring length are there

 

The Hagon numbers aren’t reliable as some dispense with the spacer tube 

 

https://www.brooksuspension.co.uk/fork-springs/yss-fork-springs/?manufacturer=60

  • Member Contributer
Posted

I think stock rate is 0.85 kg/mm.

Seems most Japanese bikes have suspension tuned for 65kg riders.

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