Hi, I found adjustable risers on Aliexpress for only 51 dolar, free delivery to Croatia and ordered it. Did anyone od our forum tried it? I think it lifts nadlebars for cca 5 cm but you can push it forward, or backward as you like.
When I get and try I ll send a report.
Best regards

http://www.aliexpress.com/item/Universal-Black-Anodized-2-Inch-Pivoting-Motorcycle-Handlebar-Riser-For-7-8-Bars-Clamp-ZJMOTO/32319799322.html

I've used 25mm risers and found them about right. 50mm is a lot, but depends what you are after.
I typed 'k100 handlebar riser' into eBay and it brought out several similar to mine in 25 and 30mm sizes. They're very difficult to spot on the bike. 
No forward or backward motion though. You would need to make sure your type are well tightened for braking.

I try to find solution to sit more backward. With this adjustable handlebar could be a problem with cables even RT variant. I ll see, 50 USD wasnt much even it failed

I agree with Comberjohn. I have 25mm risers on my bike and they are just about right with the standard K100 bars.

The risers you have found are a knock off of the original Rox Risers, but at a cheaper price. Here's a link:

Rox Risers

They work well for dualsport/GS-type bikes as you can swing them a bit when riding off road when needing to stand up. Be careful with hydraulic hose and control cables. Often these need to be lengthened when at the extreme positions.

Hi wondering about the 25mm risers, are they a straight install? By that i mean are all original cables and hoses still used, or are there any other mods needed.

thanks.

'Bar risers of 25mm height (for 22mm saddles) for K bikes don't have a provision for fitting the handlebar dashpad so you have to drill and tap or rivet a holder into the rearward facing part of each one if you intend on retaining the pad, easily done.



Otherwise they're a straight bolt on. All cables and brake hose are stock length items on mine.

Unbolt the original top clamp and reassemble it upside down then add a flat clamp. Job done. I did this on my K's and it worked fine.
10 minute job.
Try it for yourself. I added two black ties to keep the cover in place.
         Ajays