1. Does it really work?
2. Will it decrease the longevity of the bike?
I really doubt it, how long will you keep that $18K bike?
3. How hard is it to install?
Not too bad if you are mechanically inclines and have the correct tools.
'09 450 EXC Nani Roma Limited/'08 R1200R-Gone to the Hipsters/'02 Dirty lil KTM400EXC-gone to a good home/'10 WR290X/R buhbye!
'81 R100RS Rattlecandy Red/'06 950 ADV Orangeboom/91 R100GSPD Derelict