http://www.landparts.com/info.php/i/669/in/aries-knob-o-e-m-for-heated-grips.html

The use of new and R1200GS/ADV F650/800GS knows the problem with replacement knobs. Series knobs are comfortable, offer good grip but have a value for money is absolutely no loss. Aries with the knobs set for mounting OEM (Only for heated grips), replacement of worn knobs is simple, fast and above all economic. The particular mix of knobs Aries OEM Soft as well as offering the same quality of knobs, helps to neutralize and absorb vibration. It also offers exceptional grip in rain and cold, while maintaining its softness even at freezing temperatures.

Available exclusively for heated grips. The set includes knobs dedicated to positioning the left and right.

Instructions: the clear instructions in Italian with photos, explains in simple stages of assembly.