I’d say so, some people say they’re pointless on HTs but I really don’t understand why, when your rear suspension is just your legs then I’d say have more room to use them when the going gets rough would be even more beneficial, but still.
There’s a more complex way to do it, but as a rule of thumb measure the amount of post showing when your saddle is at the height you want it for climbing – just the post bit, not the head of it – we’ll chalk that up to ‘like for like’, then subtract 25mm for the seal bit at the top of the reverb – I personally would want the closest travel to that, but less, so if that figure is 140mm I’d go with a 125mm drop, if it was 120mm I’d go with a 100mm because I used to have one that went a little bit over the the height I’d usually have it, yeah they’re infinitely adjustable, but if you have it too high it hurts your back, or did mine anyway.
If yours is 140mm to the rails, I’d guess that’s 120-130 of actual post, minus the 25mm for the seal so with a 100mm drop reverb you’ll have pretty much the whole thing in the seat tube and you’ll be able to put the saddle as low as possible when you want it out of the way – perfect. (as long as the seat tube is long enough to accommodate the lower part of the reverb, but they come in a few lengths).
