Speed By Design always strive to bring you the highest quality parts. The Crazy 8 Lids were one of the first urethane products created by Speed By Design. Due to the high demand of the parts, the mold would not make parts that would meet our expectations. Practice makes perfect! Using new techniques and new technology, Speed By Design has retooled the Crazy 8 lids. The new Crazy 8 lids are better than ever before. Now also available to fit 8 inch Hertz SV 200.1! Speed By Designs plan to stock Hertz speakers and billet grills in the near future.