Enhanced performance and safety are also guaranteed by the other UPGRADE 4-piston monobloc front calipers, in aluminum: the M-50 with 30 mm (11/8") pistons still heading up the category today in terms of weight and rigidity, like the M-4, weighing a little more for 34 mm (13/8") pistons. The concept for the GP4-RB and GP4-RX is instead different, made up of two parts obtained from a single billet of aluminum.
Those who choose to stick with axial calipers, on the other hand, can cater to their tastes with the P4-40R and P4-40C calipers, all sold with sintered pads but distinguished by their finishes: black for one, and gold for the other.
The GP2-CR (a great match for the 484 café racer) and GP2-SS are instead available at the rear. They both have two parts obtained from billet and 2 × 34 mm (13/8") pistons, like the P2-RS84 and la P2-CR84. All four offer a good combination of light weight and rigidity.
RESISTANCE TO STRESS AND LIGHT WEIGHT
Even before the brake calipers, the most eye-catching component is the rear brake disc: one with the kind of small braking band typical of racing models may mean the motorcycle’s overall design goes to waste and the shine comes off its brilliance.
Apart from the visual appeal, a disc also needs structural characteristics that don’t compromise the joy of riding. You need reliability, performance every time you brake, high thermal resistance and minimal noise and vibration.