Mountain Bike Hydraulic Disc Brake Set, 4 Piston Caliper Front and Rear Brakes, 785mm Front 1490mm Rear Hose, All - Metal Pads for Off - Road Cycling with 22.2mm Lever

Item Type: Hydraulic Disc Brake SetMaterial: Aluminium AlloyProduct Color: As Pictures Shown Product Size:Front Brake Oil Pipeline: Approx. 785mm / 30.9inRear Brake Oil Pipeline: Approx. 1490mm / 58.7inBrake Caliper A Pillar Size: Approx. 75mm / 3.0in (common for disc brakes)Brake Caliper B Pillar Size: Approx. 51mm / 2.0in (common for disc brakes)Installation Size:Front Brake Caliper: B pillar (side mounted) conversion seat, fits 160mm / 6.3in disc brake rotor when installed in the front brake position, and fits 140mm / 5.5in disc brake rotor when installed in the rear brake positionRear Brake Caliper: B pillar (side mounted) conversion seat, fits 180mm / 7.1in when installed in the front brake position, and fits 160mm / 6.3in disc brake rotor installed in the rear brake positionApplicable Brake Lever Installation Diameter: Standard 22.2mm / 0.87inProduct Weight: Approx. 677g / 23.9ozBrake Type: 4 Piston Hydraulic Disc BrakeBrake Lever Fingers Number: 2 fingersPackage List：1 x Front Hydraulic Disc Brake1 x Rear Hydraulic Disc Brake

• 4-Piston Dual-Drive Caliper: This mountain bike hydraulic disc brake set uses a 4-piston dual-drive caliper that clamps both sides of the rotor simultaneously with equal force, delivering smoother, more stable braking than standard 2-piston systems. The synchronized pressure prevents rotor warping and eccentric wear, ensuring consistent high-performance stops even on steep or muddy trails.
• All-Metal Brake Pads with Copper Fiber: Built-in all-metal brake pads feature copper fiber-enhanced friction material that resists high temperatures, reduces dust, and eliminates squealing noise. These pads maintain strong stopping power in wet, sandy, or extreme riding conditions, making this hydraulic disc brake set ideal for aggressive off-road cycling.
• Universal Compatibility for Mountain Bikes: Designed for most mountain bikes, this hydraulic disc brake set includes front (785mm) and rear (1490mm) hoses and fits 140–180mm rotors depending on mounting position. The brake lever has a standard 22.2mm clamp diameter, ensuring easy installation on common handlebars without adapters.
• Premium 6061 Aluminum Alloy Construction: The caliper body is crafted from upgraded 6061 aluminum alloy with a matte baked-on paint finish for corrosion resistance. Fully sealed corners and waterproof, dustproof design make this hydraulic disc brake set maintenance-free and built to endure harsh outdoor environments season after season.
• Ergonomic 2-Finger Brake Lever with Integrated Design: The lightweight, frosted brake lever features non-slip particles and a short-reach stroke for comfortable control with just two fingers. Its integrated oil cylinder ensures excellent sealing and efficient hydraulic transmission, giving you responsive, reliable braking power with every squeeze.