Installation reuses the stock bolts and wire heat-resistant washers, yet the left-side guard’s holes were spaced just a tad too close together. We didn’t have to cut anything, just had to use some elbow grease to get the bolt to bite into the thread. Naturally we tried to bend and flex them with our hands to see how tough they are, and they don’t yield a millimeter. These are really hard. After a couple of rides they look great with no heat damage and no real signs of scrapes or gouges from our boots or aggressive branches.