After upgrading my automotive brake system, I chose Dorman M39309 Brake Master Cylinder for its high performance. As a result of using this product I found that my cars stopping power increased and I now have better control when braking at high speeds. The installation was quick and easy too, which I appreciate .The only downside is that it's a bit pricey compared to other brands, but I think it's worth the investment for the added safety and better driving experience..