I don't know about you but I didn't like the way that big ugly front brake reservoir looked on the bars. Adding a gaurd to it makes it a bit better but the Rizoma billet res. looks better and is cheaper than some of the gaurds. I had heard a bit of talk about it on here, (that's how I knew to Google Rizoma) but couldn't find a good post about it.
I went with the 35mm CT027 in black from Desmo works. $71 plus shipping
Its a beautifully made piece of Italian billet goodness. ( I had to laugh at the difference between Italian and German designs when they were side by
side on the bench.) It comes with interchangeable outlets. I had to switch to the small one for use with the stock hose. Its machined for an Allen wrench in the end.
Installation was easy. The supplied bracket fits under the mirror. Take care to cover your bodywork in case you spill brake fluid. I unbolted the old reservoir first, clamped off the hose (needle nose vise grips w/ fuel hose over the jaws) and tilted it as the hose came off so I didn't even have to drain the fluid. I trimmed about a 1/4" off each end of the stock hose, it fit a bit neater after that. The two bolts for the front brake master will be too long after the Urine cup is gone. I cut mine down but Im sure you can find some shorter stainless allen heads at the hardware store ahead of time. Thread is 5mm x .8 Dump some fluid in the new cup and you're done. If Rizoma had a shorter mounting bracket might look a bit cleaner. Or if you're good, make a shorter one or modify theirs.
Its quite a bit smaller so watch your fluid level as the brake pads wear.