265 is the PD diameter, 15W indeed fork oil to me used, 195 - is in theory the level from the fork tube to fill with oil !without PD valves installed!, 35C is the outer diameter of the fork sliders - C meaning conventional (no upside down) fork.Mario wrote:Oyabun you got my attention
Found this info on a application list from YSS
They speak of "265 + spacer / 15W / 195 / 35C"
265 must be the diameter 26.5mm / spacer?
15W fork oil thickness (how much?)
195 (maybe ml ?)
35C (don't know)
That's correct. Once installed, the damping rods are modified so no direct way to go back. But trust me. You would not want to go back for sure. In case you want to sell the bike without the fork valves - best way is to order two factory new damping rods ($9.38 each from bikebandit) and reinstall everything with those.Mario wrote: You speak of enlarging holes (than there is now way back!!) is this also necessary for my Forza 300?
Frankly I'm not too good in creating tutorials, as I like to work on things and usually don't have anybody around to document so I have done it based on the installation instructions linked. You can search for general work on conventional forks - the whole installation is different by enlarging the compression holes on the damping rod and installing the PD valves between the damping rod and the spring.Mario wrote: Is there a picture/video tutorial how to do this mod? (I never worked on front and rear suspensions)
I can definitely send you the email flow what we have exchanged with Tom while he was doing his upgrade to help a bit. The whole upgrade can be done in 4 hours tops (I can do it in less than an hour by now as I had the front apart a few times)
Good thing. I love the Ohlins also, but the YSS ones are really good too.Mario wrote: I am also planning to buy the rear YSS Shock Absorbers (like the Öhlins more but way to expensive ) , I think there must be some balance between the front and rear suspensions??
The main difference between the two is that the YSS Forza specific dampers are only adjustable on spring preload - while the Ohlins ones can be adjusted for rebound and compression damping also. I have never ridden a forza 300 - their rear shocks seem to be a bit better quality than the 20 cent PCX ones.
Speaking of balance - most of the guys around have modified only their rear suspension and can live with it. Some has added stiffer springs at the front - without touching the damping at all. Which is helping to avoid bottoming out for heavier riders, but definitely not helping traction as the already very weak damping will not be able to control the stronger spring. So in my opinion the front upgrade is absolutely worth it - but it is often neglected.