oem forks any different ? thanks

Colours, sometimes a bit more weight, sometimes adjustable features not present.

occasionally a steel steerer instead of aluminium, sometimes a bit less external adjustability. Most are the same these days I think. I think some really cheap oem forks might be different though.

yes, usually less adjustment, not necessarily heavier.

Which ones?
If they are rockshox, the OEM ones have a different number (eg 409, 335, 327, 289). If you go on the website you can compare models to see what the differences are

what a wonderfully vague question, the wonderfully vague answer is “sometimes” 😉

426 revelations silver

426 revs are normal (non OEM) stock

409s are the OEM ones (the only difference being the floodgate (how lock out the lock out is when engaged) adjuster requires an allen key)

cheers chaps.