Re: What regulator to buy for 900rr.. .
The electrosport. It's what I replaced my Reg/Rect with...also my stator. It's a little beefier system that stock, has more output, especially at the lower revs....it's easy to tell, since my headlight used to dim a little at idle, and it doesn't at all anymore. If I remember right, it has a decent warranty too. But word of warning, install wasn't plug and play for my 929...had to splice quite a bit. But I spliced into the old part's wiring, which maintained the stock plug, instead of splicing into the wiring harness. Happy with it though.