CARDONE has extensive experience in testing and engineering CV Drive Axles – we’ve spent over two decades analyzing materials and processes to arrive at a superior, longer-lasting product. CARDONE Engineered Technology is our proprietary method of arriving at a product that meets O.E. performance standards. 100% Neoprene boots are designed with additional bellows, when needed, to resist bellow stress and ozone cracking, the leading cause of boot failure.