Braking System: 240 mm hydraulic disc brakes to give you that Substantially-wanted halting power - safety is vital, and these brakes deliver. Conquer any terrain with relieve over the Sur-Ron Ultra Dirt Bike. With 4-piston brakes, a removable and swappable 55AH battery, as well as a lightweight aluminum frame, https://sites.google.com/view/surron-2025/home