900 kg (1,984 lbs) in 45 °C (113 °F) heat
At the Circuito San Juan Villicum, the Superbike riders use brakes in 9 of the track’s 17 turns. That’s a total of 29.7 seconds a lap: the equivalent to 30 percent of the race duration. However, in four of the nine braking sections the brakes are used for fewer than three seconds, aided by deceleration at those points of no more than 75 km/h (47 mph).
In the 21 laps that make up the traditional two races, the brakes are used for just under 10 and a half minutes. This, combined with the high temperatures that the asphalt reaches – 45 °C (113 °C) in 2019’s Race1 – has the potential to cause a dangerously high increase in the temperature of the steel discs. From the starting line to the checkered flag, each rider exerts a total load of 900 kg (1,984 lbs) on the brake lever – a considerable effort.