Hi, new member here. I have just bought my first brand new 2014 Versys 650 out of the box (old stock). I saw a post by another member and I too have experienced the same rear end issue. When I am in a corner and decelerate by changing down gears, the rear end gives a little sideways wobble, especially when changing from 3rd to 2nd. I am not changing down hard and the revs only go from 4000rpm to 5000rpm when I change down. My bike is the non-ABS model, I have checked both tyre pressures and I only have 1200 km on the clock, so it cant be tyre wear. Everything is still stock from the factory, including the suspension settings. Any thoughts?
I got a 2012 new in 2014, and my oem tires were donuts in 7k miles. I got the step up Dunlop Roadsmart II's and they have been wonderful for over 10k miles: wears round as a baby's butt and handles like glue. The oem suck big time. I run about 34/38 lbs air f/r, and others run higher.
Unless you are a big guy, the stock shock should be fine. I got Progressive since I'm a happy Progressive customer (good hd shock for the money), but most don't need it. Try adjusting it. GET a manual on ebay for $10 or $20 dollars!
And 6k rpm is where your midrange cam kicks in, so you are dangerously close to breaking loose of the pavement when downshifting near where you are doing it at, esp with leaning on lumpy hard (old) tires, lol. ymmv.
Check your chain adjustment/lube and alignment to the rear sprocket too. 2014 model should be a smooth chassis to ride on compared to earlier years, esp. Gen 1.
And if you are a heavy chap, you might want to investigate different brake pad materials instead of oem steel bit pads: they are frictionless on ss discs.
POST A PIC of your bike! You have a nice model!