Well, my bike has been down twice alrerady and the cowl hasn't cracked. The sliders would be fairly cheap. I mean, most of us have frame sliders, but the plastixcs still get damaged. Yes, I know they're there to protect the frame mostly. Spend like 30 bucks on something that might help isn't taking too much of a risk. The exhaust sliders would be real cool, but the extra "layers" would mean that the pipe has less to travel to come in contact w/ the ground and might mess up soething up front, like the header or something. I don't know. I just got my CRG roll-a-click levers in and I'm gonna go test fit 'em at the shop.