I have 4 different NightRider headlights and 7 different bikes. Recently I lost the headlight mount on my mountain bike in a crash and didn't realize it. I'd like to see REI to carry the headlight mount as an accessory so it isn't necessary to buy a whole new headlight that comes with a mount. Also having an extra mount(s) mounted on each bike makes the portability of my different headlights from bike to bike a lot easier.
I'm pretty sure you can get them right from the NiteRider site. Great lights, by the way.
Yes they are available on Amazon, directly from Nightrider and other retailers. I try to support REI as much as possible with my purchases because guys like Amazon don't need my business. I've been with REI since 1977 and even though it is a relatively successful business I just want and hope they'll be around as the Amazons of the world overwhelm and monopolize the retail business. I know it's just a $10 part but I think a lot of people would buy this part and to me it makes sense.