Review on Raybestos MC39612 Professional Master Cylinder by Rodney Kriech

Based on our own experience, this professional master cylinder failed to deliver performance. We installed it in our automotive project, and within weeks, experienced brake failure... The one pro is that it seemed sturdy upon initial inspection. the only con is that it jeopardized our safety on the road. We do not recommend this product for anyone looking for quality brake system components in the performance car parts & accessories category..