Hello everyone, I tried to research the OEM oil weight in my service manual to 2018 250s but to no avail.

The 250s front suspension seems a bit soft for me mainly riding through trails while I push the bike and myself to the limit. Some points I bottom out the suspension when I come up to an unexpected rock or rut in the trail, and a heard that adding a heavier weight will stiffen up the suspension to make it less likely to bottom out. I guessing I weigh 170 lbs with all my gear and supplies with me. Do you have any recommendations?

 

My manual for a '13 shows KHL15-10, which despite the "-10" in the name, I believe is equivalent viscosity to a 5wt.

Keep in mind, the forks are already a bit harsh on square edges with the stock valves and oil. You could probably benefit more from heavier springs and then run the same or lighter oil. A heavier oil or change in level could make it better or more harsh. An upgrade to racetech valves would also help. Check out racetech's spring rate calculator to see how far off you are on springs for your riding style.

 

i just did mine with 5wt and im 175ish. it feels perfect after ut i have upgraded racetech springs and gold valves

 

Mind telling me what springs you went with and how hard it was to swap them out?

 

.50 springs and super easy. just take your time and watch a few youtube videos on the klx forks first. think it took me hour at first. Now it take me 15 minutes to take the forks apart