hoping someone can help, cuenttly fitting an rs250 rear shock and modded rear link to my track bike unfortunatly i never measured the ride height prior to starting. Can somone please tell me the measurement from the cente of the wheel to a fixed point on the subframe so i can check this. the bike needs to be on the ground not on a paddock stand or you can (not necessarily will) get an odd reading.

I make it 480mm from middle of rear wheel nut to the top edge of the top of the rear sub frame, assuming you measure straight up. Difficult to explain but hope it helps.

cheers mate, i presume you mean the top of the subframe if you put a spirit level through the cl of the wheel vetically?

Yep, what you said.