This master cylinder has completely transformed the brake system on my performance car. Through trial and error, I found that this product is worth the investment. The pedal response has dramatically improved and the stopping power is unparalleled. The build quality and durability ARE also unmatched... The only con I can think of is that it can be a bit pricey but you truly get what you pay for. Overall, if you're serious about your automotive performance, this master cylinder is a must-have..