The new Monster 821 braking system guarantees high performance and maximum safety in all conditions. On the front the Brembo radially-mounted, 4-piston, M4-32 monobloc brake callipers with axial master cylinder act on 2 semi-floating 320 mm discs, while the rear 2-piston Brembo calliper works on a 245 mm disc. The system comes standard with adjustable ABS Bosch 9.1MP.