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, eliminating uneven pad wear and rotor warping. Unlike standard 2-piston brakes, this design delivers smoother, more stable, and more powerful stopping performance—ideal for steep descents and technical 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 noise, and minimizes dust. These pads maintain strong braking power even in muddy or sandy conditions, ensuring reliable control during intense off-road rides without degradation from heat or debris.
• Universal Compatibility for Mountain Bikes: Designed for most mountain bikes, this hydraulic disc brake set includes front (785mm) and rear (1490mm) hoses and fits standard 22.2mm handlebar diameters. The B-pillar side-mount calipers support 160mm rotors up front and 160mm or 180mm at the rear, making it suitable for trail, enduro, and all-mountain riders seeking an upgrade.
• 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 ensure maintenance-free operation in wet, muddy, or dusty environments—perfect for rugged outdoor cycling adventures.
• Ergonomic 2-Finger Brake Lever with Integrated Reservoir: The lightweight, frosted brake lever features non-slip particles and a short-reach 2-finger design for comfortable, precise modulation. Its integrated oil cylinder offers excellent sealing and efficient heat dissipation from caliper to hose, reducing maintenance needs while delivering consistent, responsive braking feel.