Evo fork oil

Mr Gazza · Today, 03:26 PM

I just googled HPSF -017 and that specific oil didn't come up but it does seem that the number after HPSF (high performance suspension fluid.) doesn't bear any relationship with the viscosity. So I doubt it is 17w.
I did note that they go down as low as 2.5w and maybe lower, so you shouldn't have any trouble finding a lighter oil.
Best people to ask is going to be K-Tech.

Regarding the "firmness" of your forks. Have you tried adjusting the damping? if indeed you have adjustable damping?

Darren at MCT actually put thicker than standard oil in mine (15W I think) And that certainly made the adjustments more vivid than previously.
I backed off the compression a couple of clicks to make it more comfortable over the Norfolk B-roads and likewise the rebound.
That made it worse and so I called Darren and he said always do more to the rebound than compression. So I backed off the rebound a couple more clicks and that did the trick, it's been fine ever since.
Just wondered if it just needs a little play? Note your current setting before you adjust though.

Edit.. Just found this. https://www.propowermx.co.uk/product...EaApHCEALw_wcB
Looks like you already have 5w?

Today, 03:26 PM	#1
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,956	I just googled HPSF -017 and that specific oil didn't come up but it does seem that the number after HPSF (high performance suspension fluid.) doesn't bear any relationship with the viscosity. So I doubt it is 17w. I did note that they go down as low as 2.5w and maybe lower, so you shouldn't have any trouble finding a lighter oil. Best people to ask is going to be K-Tech. Regarding the "firmness" of your forks. Have you tried adjusting the damping? if indeed you have adjustable damping? Darren at MCT actually put thicker than standard oil in mine (15W I think) And that certainly made the adjustments more vivid than previously. I backed off the compression a couple of clicks to make it more comfortable over the Norfolk B-roads and likewise the rebound. That made it worse and so I called Darren and he said always do more to the rebound than compression. So I backed off the rebound a couple more clicks and that did the trick, it's been fine ever since. Just wondered if it just needs a little play? Note your current setting before you adjust though. Edit.. Just found this. https://www.propowermx.co.uk/product...EaApHCEALw_wcB Looks like you already have 5w? __________________ Last edited by Mr Gazza; Today at 03:34 PM..