A bigger disc does not change how much fluid your master cylinder has to move. That is set by the caliper. Here is when a master cylinder or braided lines actually matter, and when they do not.
September 2026
Our Top Recommended Big Brake Upgrade Kits For Your Seat Leon MK1
Every Tarox big brake kit for the Seat Leon MK1, from the 323mm Sport entry point to the 360mm Super Sport, with real minimum wheel sizes and what actually arrives in each box.
Our Top Recommended Big Brake Upgrade Kits For Your Ford Cortina MK5
Eight HiSpec Billet 4 kits for the Ford Cortina MK5: 1P solid disc from 245mm and 2P floating disc from 285mm, covering 15 to 17 inch wheels from £672 to £1,320. Two Ultralite 4 kits appear cheaper in this category but are compact race calipers not suited to this car.
Hi Spec vs Brembo, AP Racing And Wilwood: Which Big Brake Brand Is Right For Your Car?
We stock Hi Spec and Brembo directly. Here’s an honest look at how they compare, and where AP Racing and Wilwood fit if you’re shopping around.
Our Top Recommended Big Brake Upgrade Kits For Your Ford Cortina MK4
Eight HiSpec Billet 4 kits for the Ford Cortina MK4: four 1P solid disc from 245mm, four 2P floating disc from 285mm. Covers 15 to 17 inch wheels from £672 to £1,320. Two cheaper Ultralite 4 kits also listed but not the right caliper for this car.