Just what don't you know about roost, I'd be happy to explain what I know about it. I just put a fresh rear on my dirt bike, your welcome to stand behind me while practicing starts. I'm glad you set me straight on that. Here I was thinking, all the ads with that product in moto mags and the fact that it is listed in the moto section as well. On top of seeing a few guys at the MX track with them on. Meant that it may have been developed for dirt biking. And that it would do bugger all in a high energy hit (belly flop in a rock garden), but dampen fast moving light objects (you know like dirt and small rocks, from that guy with a toggle switch throttle on his 450 and a twitchy clutch finger). While still allowing full movement, light weight and be able to flash your new kit. If you feel that it is what you will feel comfy riding with for DH, then by all means. I was just noting my personal two cents and marketing I'd seen.