cusco brake cylinder stopper

[Ivan141]

Hmm...work involved: maybe drilling a few holes I think..just judging by looking at pics of the darn things. The way it works is it stiffens up the location of the brake master cilinder. Normally this is only mounted to the firewall, and when you brake hard, it will flex a bit, losing some braking power exerted on the pedal. The stoppers are usually fixed to the suspension turret (which is pretty sturdy), and then adjusted to make contact with the front tip of the master cilinder. So when you brake and the firewall starts flexing (on my trackday volvo it flexes visibly about 0,5 or more centimeters!) it pushes against the stopper, this will reduce flex by a fair amount.

Just a note: another company (aerodyne or something I believe) also makes stoppers that look a bit less fancy, but are a lot more affordable.
All in all it's a mod I would do last when upgrading the braking system.. just like braided brakelines it is basically the icing on the cake, that you will barely notice if the brakes themselves arent working optimally.