Guys,
some back ground first.
i am 6'2", with long legs, 90 to 95 kg( about 200lb) in my gear and I'm 45.
I have just fitted a set of Bitubo's to the rear of my R3T. they are spring, rebound and compression adjustable. they have a nitrogen resevoir on them as well.
the Triumph mechnic took it for a run on Saturday and he couldn't believe how much of a dog it made their demo tourer bike seem like.
O.K. IMHO, I wouldn't lower the rear of a rocket, any rocket. they suffer from clearance at the best of times and to lower them is removing your get out of trouble margin. the Bitubos' have raised the rear about 15mm in real terms and it now means I can take roundabouts, mountain roads, tight corners etc at a pace and still have room to move if required. they mde that much difference to the boards( and everything else grounding out) they are replaceing everything that is marked underneath.
the taller shocks have steepened up the rake/trail figures which helps with the turning in on corners.
The standard Triumph shocks have a far heavier spring than is required. they are also extremely under damped, which is why they all bounce around so much. triumph here have said so themselves.
Once agin, IMHO, if you are going to lower your rocket, make sure that what you use is adjustable, very adjustable. If you can control your compression and rebound, then you also gain control over how much you bike moves and ultimately what touchs down when.
You vertically challenged guys may have to make mods to help with that issue, but as well as lowering it, i'd be either lifting stuff( pipes, pegs, boards etc) or narrowing stuff to give you back the cornering clearance you lost from lowering it.
Bottom line, I wouldn't buy suspension that is only spring tension adjustable. If you are going to spend the hard earned, spend it on value, not bling or advertising suck in.
tabledrain