We re-sprung and re-valved the stock GSXR-600 shock for Randall who races with WSMC. He raced with it last month and liked it. Today at Willow Springs, I bounced on his bike it after he said it was perfect and he did not want it changed at all. I made changes to his front and rear damping and made the bike work even better. The biggest trick is helping people understand just how good their suspension can be. I have to make the changes in steps so they can get use to it. Correct suspension makes you faster with less risk and your tires last longer.