Transfil's work on bikes that don't run full outers by providing enough outer to replace the existing outer coupled with enough liner (thin enough to run through all the cable stops) to run the full distance from shifter to mech front & back, thus 'sealing' the wire from crap & corrosion apart from what gets in at the shifter or mech ends.
Transfil ends are not really any better sealed than standard shimano, they just stop the crap from getting into the main cable run & interfering with the shifting
A full outer run does the same thing so do you really need a sealed set?