Jump to content
Sign in to follow this  

Going from 10w-15w fork oil with progressive springs

Recommended Posts

First post so, Hi, and let me say you guys seem to have a great community here. Hopefully I'll be able to contribute where I can.
I recently installed some Hyperpro progressive springs in the forks but used Belray High Performance 10w oil which is about the same viscosity as stock (33 cSt). I didn't use the Hyperpro 15w that came with the springs as it's winter here and figured I'd try a lighter weight. Also, it seems that Hyperpro may be rebranded Putoline 15w which is 67.5 cSt. Seems like a big jump.
Now that I've gotten some time with the setup, it seems when the forks compress over bumps and ridges, it is much smoother. However, when the forks need to extend for dips and drops, it's still really harsh. So my question is, would going to the 15w help? It seems like a heavier weight, and specifically that much heavier weight, it would just reverse the situation (harsh over compression, planted when extending). It's also hard for me to tell what exactly I'm feeling as the rear shock is a pile of garbage regardless so I'll definitely be replacing that.
I put progressive springs and the same Bel Ray 10w in my 2000 gs500 with a stock rear and that thing is miles ahead of the 07. Pretty disappointing to have the lowly gs smoother and better planted than the 07.
Any input is welcome and appreciated.

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  


Important Information

By using this site, you agree to our Terms of Use.