i've gotta disagree here.
cyclecat frame sliders (no experience thus far with any other brand) definately helped minimize damage in the two lowsides and one highside i've put my s4 through. heck... at the very least, they saved the tank during the lowsides.
The Cycle Cat slider does exactly the same thing for your front motor mount as the Nichols does. Sell the front one and replace with a Slider kit.I chose Nichols motor mounting bolts over having frame sliders.
I like the way they lock up the motor to the chassis and remove the flex.... but they don't give you the option to afix sliders as far as I know.
If there was a slider that would work with them I would employ it........ as my last crash used my leg for frame, motor and tank protection...effective!.... but painful
Pretty much the same thing happened to me. The radiator on my S4R would have taken a major hit were it not for the frame sliders. As it was I only ended up with a scratched windscreen and a small tank dent..... and a really really sore shoulder.I overcooked a corner with my c-cat frame sliders, the bike coming to a stop on it's right side, me being thrown over the bars. I snapped off the rearsets, but that was it. None of my carbon fiber was damaged AT ALL. No tank damage. I am with Strati, a believer. 8)