I saw the Progressive lowering shock and was interested, but it only comes with one standard spring. I figured chances are it's more for the "average male rider", maybe 170 lbs. so it would be too stiff for me.
I just did a spring swap in my stock shock. Honestly, if I didn't live close to EPM, not sure I'd have gone that route. The lowering spring made for the Versys that Klaus ordered didn't fit correctly. He worked with me to find a spring that lowered a bit but wasn't too soft. Too soft and the undertray contacted the rear hugger! The lowering springs work by being soft to give higher sag numbers, therefore lowering the bike. I didn't want it that soft. We tried a few different springs. Klaus was awesome to work with. He did sag measurements front and rear and we got something really workable. I'm very happy with it!
Progressive has all kinds of lighter springs, single and dual rate. If you are 5' 4", then the lowered shock could be a little vertical relief you are looking for. They are real responsive once you get them on the phone at Progressive. Get the shock for the best deal usually on Amazon/ebay and then call them about the spring (or do it first either way.) They are kind of like Honda, being the biggest in USA, so they are very expert at half the price of other alternatives. I've been real happy with all the products I've tried on a half dozen bikes (mostly fork springs on BMW's before, and now rear shocks on Jap bikes.)
I got Progressive on the phone about maybe needing a HD spring like they offer on Honda Nighthawk 750's. They said they have a dual rate spring but first, all the sag is measuring the height sitting down on it from some reference point: it should be 3/4" to 1". He said try that first. I never have done that, but I heard having the right spring is over 90% of the battle. Well I'll try it, since it's not far off this time.
The Progressive stock spring is 900 lbs (static, not dynamic) which is bike, options, passenger(s), cargo, and gas/fluids. No, it sounds like is sprung more for a 225 lb American rider, lol. If you don't get an answer PST, dial zero and the operator knows all their hiding places and will get someone. Springs are about $90. I paid total $378 on Amazon for the shock new. Progressive retail for 465-1182 is $496. You might get them to swap it out if you do it from brand new (Girls on Versys get a lot of respect.) You'd have a lot of possible sales from this site if you could do that: I didn't know we had so many 5' 4" riders before.
And the shock is a definite part of a 2 or 3 way reduced height plan you really do need. Sell your old shock once you get the new one dialed in, which a Hyperpro 1/2 price (used market price) should pay for your new Progressive shock and spring either way. Used Hyperpros must go quick because I've never seen one on the used market
You couldn't buy a reduced height shock from anyone but Progressive I (would almost) bet: that's the power of being number one in sales demand. Since the shock is the most expensive reduced height method, there must be a bunch of 5' 4" lady Versys 650 riders (it may be too painful for 5'4" guys