actually G85CS is matchless speak for machined front drum(no fins),forks are either roadholders,or matchless compy forks,the rear hub is a magnesium conical off their G50 roadracer,the tanks just a basic compy tank,(made by Lyta in lightweight aluminium for matchless),& i wouldn't be surprised if the frame is indeed crome moly!,(everyone had a good giggle at beezer for using titanium??)