@Rojer Yes, I have the motamec ones. I have found that they fair up very well to protection. They are made of nice durable material and the elastic is nice and strong. The good thing is thaey can be taken off and refitted without removing the shocks.
I've not sprayed mine with any coating as the covers cover most of the threads barring the last bottom bit, which I'm never going to use.
My covers are 406mm I believe. They do 3 sizes and mine are the middle ones. I will dig out the link in a mo. Check my progress thread for pics on how they've performed over the winter. I'm happy with them.
But the ACF-50 that
@leeds2592 recommended has good reviews and isn't expensive.
On a side note, the bilsteins are excellent. Not crashy at all and a perfect fit and forget coilover kit :smile: