Do you mean the D8 bumper? I'll have to take a look at it. Any Idea about reducing the front end bottoming out? I believe its all due to a "triple" at my local track that I've found to be faster, and much more consistent to take as a "double-single". I think the wear occurs when landing rom the double, and going up the face of the single. Thicker weights? More pre-load in the springs? I'm running the kyo springs, and the collars are run down .060" from the top on all for corners.