In our experience, the original R1150 GS brake lines (not Adventure) are sometimes too short for use with handlebar risers.
This brake line set is for the R1150 GS without ABS.
We suggest that you also order the brake line set when installing 35mm bar risers. If it turns out that the line is not needed, you can return it for a refund. If your has ABS, please order part number 8160902.
If you are installing 25mm risers, there should be no need for a longer brake line.
Tip: Install the handlebar risers first and see if the original line has enough slack throughout the entire range of movement. If so, return the brake line for a refund.