I installed Oxford heated grips and Barkbuster Storm hand guards over the winter and they've made a huge difference in cold/cool morning rides into work. The tips of my thumbs still get a bit cold when it's less than 40F out but otherwise it's excellent.
I had Oxford grips installed on a previous bike and loved them for cooler temps. I have to say though for "cold" weather riding (10C/50F to 0C/32F) heated gloves are superior to heated grips. They heat the back of the hands and fingers, the parts that get really cold. If I knew heated gear (jacket liner and gloves) was as good as it is in cooler temps, I would have got it a lot sooner.
Since I'm a cheap basdid I got some cheap $7 fleabay Chinese grip heaters and plan to put them on top of the stock grip and cover them with a set of grip puppies. total investment about $16. I didn't come up with this idea...saw someone else do this on the interweb so I know it will work.
" I don't care about shinny chrome or loud exhaust, I don't ride to be seen, I ride because I want to disappear"
Mine also has Oxford heated grips that the previous owner had installed.
They've got some miles on them, are there replacement (rubber) grips available when I wear them out, or do I have to buy the whole package?
I installed them fall of 10'. They were a easy install and work pretty good. However somehow in between testing them before install and after install the "brain" went bad. They were replaced free under warranty, but still a pain. I read some bad things about the controllers going bad on them(of coarse after I bought them....) but so far they have been good.
The only thing I would say is that when you install them:
There is a big connector plug that connects the "brain" to the controller. I have this plug hidden down under my tank along the frame. The grips stopped working this year(of course in cold March) and I couldn't figure out why. The plug had come undone. When I found it and repaired it I wrapped the connection in duct tape to help give it a better hold. Seems to be working.