I haven't crash tested these Vortex jobbies yet, but it's cool that you can replace the Delrin element on the end. Some of the guys have said that the bolt holding the whole contraption in bends on impact too. I bought some Ti bolts to hopefully prevent that from happening.
Basically where frame sliders are concerned, make sure you get a set that bolts up to the motor mounts like the one you see in the photo. Don't short yourself on this one. The Sato jobbies look good too check out www.kyleusa.com for a set.
I have crash tested the vortex frame sliders at the track and the bolt does bend. I talked to a few other zx6r owners with the vortex sliders and the same thing happened to them. Everything seems to come out fine though and it does do its job. As far as getting Ti bolts.... The advantage of titanium is that it is closer to the density of aluminum while maintaining strength closer to steel. It is also less reactive as a material than stainless steel. My point is that good Ti bolts are not stronger than good Steel bolts.
The bending bolt thing happened to me with my Vortex sliders. I called Vortex on it and they told me the bolt was designed to bend instead of breaking off and leaving you with a nub to remove and also so it didn't rip right out of your engine mounts. It did its job though and protected the plastic. I have a spare set of LP's that I may put on later.
Sliders are meant to help protect in a slide such as a lowside or a drop such as in a parking lot or at a low speed. I don't think any slider on the market would have prevented your damage from your description of your crash, cyberdos. BTW, how's the leg?
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