[KangKwad]

I replaced mine with stainless steel Allen button head bolts from the hardware store

 

[KangKwad]

I didn't use a sleeve i used a nylock nut and just stopped when it started pinching the plastic too tight. I figured why replace the hardware with expensive suzuki stuff that will just rust again. When i can use stainless for a fraction of the price that wont rust. I ended up removing the hardware a few times when pulling the plastic off to do other maintenance. It all came apart easy so i seen the hardware store bolts as an upgrade from the factory stuff.

 

[KangKwad]

I found a picture you can see them on the front and rear mud flaps where the bolt to the edge of the fender.