Not a video but really good comprehensive service instructions for the rebas can be found here if you haven’t already got them. Worth noting that not all rebas can be extended as some OEM ones are only a max of 100mm or 110mm, but you won’t necessarily find out until you have opened them and found that there is no travel spacer in them.
FYI, when you do it you’ll lose a few ml of fluid from each of the lower legs, but if you turn the forks upside down before removing the air spring assembly (the thing the spacers clip onto) you won’t need to replace the ‘main’ fluid in either the spring or the damper side.
I did it (well, in reverse, lowered the travel) on my Revs the other night. Pretty simple job.
I did it a couple of weeks ago to a 2012 set I’d got from Merlin. Opened them up for a service, saw the spacer and thought I’d give myself an upgrade 🙂
the spare parts catalog (pg 31-32) has a good exploded view to show you where the spacer is and this manual will walk you through it. Note you’ll need a deep drive socket if you’ve got 2012 (perhaps 11) version and the 2013 model can’t be adjusted.
As above – have just done the reverse – travel reduction – on a set of 2012 Rev’s and it is not more difficult that a lower service, as dropping the lowers off is most of the job and you may as well clean and service them at the same time 🙂