I know that :) I see and read all differents
Just I want to see tecnical differents between oem with Stg2 cam,
then I ask before degrees.
For example I know Stg 2 cam exhaust duration is 243 degree oem cam 260 degree..

I have not degreed the standard XT660 cam. The dyno results speak for them selves, you can see where the torque & HP is delivered with before & after runs.

Yes I see them. yamaha gives standard degrees in service manual

Yes I am aware of the Yamaha spec, but they do not state at what lift they measured the degrees at so it is hard to compare the standard cam against other cams.

what ever mate I was just wonder how is timing what is the difference, how its work.Because I see power diagrams of standard and stg2 cam..you know
just wondering. :) thank you for all information.. If I have a time a day I will check the stg2 timing with degree wheel and share here :)