HP Levers & Rearsets
You will probably find that the instructions supplied with the HP rearsets are for how to adjust them, and not for how to fit them. Most genuine accessories from BMW do not come supplied with instructions as BMW generally insist on fitting all parts themselves. Actual fitting instructions for both the HP levers and rearsets can be found in the BMW Repair & Service Manual. If you intend on doing any work on the bike yourself, this is a hugely worthwhile investment.