Back in July I ordered new Wilbers front & rear suspension for my 2015 model. I had an interesting experience that I thought I'd share here.
Firstly, I'm 165 lbs in street clothes. I ride with Givi side cases locally, plus all the usual riding gear. Add a top case on long trips.
Despite living on the opposite coast, I chose to buy from Ted Porter's BeemerShop. I've bought from them before and found Ted to be very responsive to emails/calls and thorough in discussing options.
After he gathered info about my weight, luggage and riding style, he recommended that we fudge the weight we report to Wilbers because, in his experience, Wilbers has a habit of over-springing Versys 650 shocks. So, we "lightened" the riding load we reported to Wilbers by around 30-40 lbs.
The parts arrived exactly 7 weeks after ordered. The new front fork spring made the front end more stable and reduced brake dive. The installation was more complicated than I expected, but doable with tech assistance from a helpful employee named Jeff (and you folks). You can read about that process *HERE*
The rear shock wasn't such an improvement. Despite Ted manipulating my reported riding load, the shock was built way too stiff. It did give me rider sag equal to 30% total travel, but the shock just wouldn't give much from there. I reported my sag numbers to Ted, then Jeff did a bunch of fancy math and recommended swapping the spring with one that's 5 steps softer -- a 140 spring instead of a 180 spring (whatever that means).
After the stock w/ new spring arrived, I dialed in the correct preload with the remote adjuster and now the bike handles like a magic carpet. Very pleased. My only real complaint is that the new shock is a few millimeters longer than stock, raising the seat slightly. A little disappointed in this.
Ted & Jeff documented my ordeal so they'd be ready to correctly spring the next Versys 650 order that comes in. If a shock upgrade is in your budget (it's not cheap), I highly recommend these guys to do it for you. Jeff was great both in helping me get the right rear shock and with the tricky front-end install.