This master cylinder is the real deal when it comes to upgrading your automotive brake system .As my tests showed it improved my car's braking performance immensely. The quality of this product is apparent and it`s built to last. i noticed improved response times and more control when braking at high speeds. The ONLY downside was that the installation was a bit challenging, but it was well worth it for the results. i highly recommend this product to any performance car enthusiasts looking for an upgrade..