TMM Archives - Cusco Brake Cylinder Stopper

The next time you're in the car when it's stationary and with the bonnet open, ask someone to observe the firewall when you depress the brake pedal. You'll be surprised to see how much it moves. This firewall movement is not good as it results in a mushy pedal feel and decreases the efficiency of the master cylinder's hydraulic action. Cusco Japan happens to sell a BCS (Brake or Master Cylinder Stopper) that basically bolts on to your car's master cylinder and reinforces the mounting locations for less movement. The Cusco part number for our Putra/Satria/GTI/Wira is the same as what Mitsubishi quotes for the Lancer EVO1-3 and Mirage MIVEC CA4A. The part number is 508 561A.

For some apparent reason this part and mod is not very popularly sold in Malaysian Speedparts shop but you can order them from these shops. When I was in Singapore visiting Garage R however I saw a couple (bout 4-5) units of the Cusco BCS for our cars hanging in the racks and gathering dust. The price offered by Garage R is very very competitive to what you can get in Malaysia and much cheaper compared to mail order. I quickly grabbed the part and paid for it despite not so happy glances from my other half.

Picture below of what you get with the Cusco BCS Kit Part Number 508 561A. Instructions are in Japanese but with hand drawn diagrams I kid you not.

For something that costs a couple hundred bucks I was really dissapointed with the cheap mild steel fasteners that came with the kit and decided to order equivalent titanium and stainless steel items. One week later and I was ready to install. Installation was a breeze and took about 30 minutes. Picture of the installed BCS.

As expected, brake pedal feel was much improved and stiffen after the installation of the Cusco BCS. All in all a pretty cost effective mod which I recommend only if you've already upgraded your brake hoses to stainless steel braided teflon lined items. That should be the no.1 mod to improve brake feel and reduce fade from expanding stock rubber brake hoses.