Main brake cylinders with radially arranged cylinders transfer the full force produced by squeezing the brake lever directly to the piston in the brakes caliper.
When compared to an axially arranged type of brake pump, the braking pressure point is more exactly determinable and also the 'feel' is also improved.
For these reasons and many more, these radial brake types are well established as the standard on most racing machines.
OEM Number CM074901 (PIAGGIO)