Mountain Bike Hydraulic Disc Brakes 4 Piston Caliper Front 785mm Rear 1490mm Bicycle Disc Brakes

Feature: 1. Special Treatment: The main body is made of upgraded 6061 aluminum alloy, the outermost layer is baked matt paint coating with matte texture, which is anti corrosion. Fully enclosed corners are painted, waterproof and dustproof, fully sealed, safe and maintenance free. 2. Brake Hose: The surface of the brake hose is made of high quality PVC, which is waterproof, moisture proof and ageing resistant. The oil injection line pipe has good sealing performance and has a heat dissipation function at the key position where heat is transferred from the clamp to the oil pipe. 3. Brake Lever: Singledouble finger brake handle, easy to reach handle stroke. The handle is frosted and covered with non slip particles. The integrated oil cylinder design has strong sealing performance and reduces the frequency of maintenance. At the same time, it adopts lightweight design. The installation Diameter of the brake lever is 22.2mm, which is suitable for most models on the market. 4. 4 Piston Braking Principle: Long term use of ordinary single drive disc brakes will cause disc deformation and eccentric wear. When the 4 piston dual drive caliper brakes, the pistons on both sides of the disc will be clamped hard at the same time. Both sides have the same force and synchronous friction, which is more effective than ordinary double?piston brakes. Better, the brakes are more stable, and the discs are not deformed. While pinching the brake lever, the oil pressure is directly transmitted to the four pistons on both sides, pushing the brake pads, and locking the discs, making the brake transmission more efficient and stable. 5. All Metal Brake Pad: Built in all brake pad, calcination does not fall off, resistance to friction and high temperature, strong braking force, to ensure high braking force under extreme conditions. The friction material is specially added with copper fiber, which effectively conducts heat and increases friction, solves the problems of abnormal noise, dust and high temperature degradation, and improves braking efficiency. It is specially designed for mud and sandy environments. Specification: Item Type: Hydraulic Disc Brake Set Material: Aluminium Alloy Product Color: As Pictures Shown Product Size: Front Brake Oil Pipeline: Approx. 785mm 30.9in Rear Brake Oil Pipeline: Approx. 1490mm 58.7in Brake 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 position Rear 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 position Applicable Brake Lever Installation Diameter: Standard 22.2mm 0.87in Product Weight: Approx. 677g 23.9oz Brake Type: 4 Piston Hydraulic Disc Brake Brake Lever Fingers Number: 2 fingers. Package List: 1 x Front Hydraulic Disc Brake1 x Rear Hydraulic Disc BrakeSpecial Treatment: The main body is made of upgraded 6061 aluminum alloy, the outermost layer is baked matt paint coating with matte texture, which is anti corrosion. Fully enclosed corners are painted, waterproof and dustproof, fully sealed, safe and ma Brake Hose: The surface of the brake hose is made of high quality PVC, which is waterproof, moisture proof and ageing resistant. The oil injection line pipe has good sealing performance and has a heat dissipation function at the key position where heat i Brake Lever: Singledouble finger brake handle, easy to reach handle stroke. The handle is frosted and covered with non slip particles. The integrated oil cylinder design has strong sealing performance and reduces the frequency of maintenance. At the sam 4 Piston Braking Principle: Long term use of ordinary single drive disc brakes will cause disc deformation and eccentric wear. When the 4 piston dual drive caliper brakes, the pistons on both sides of the disc will be clamped hard at the same time. Both All Metal Brake Pad: Built in all brake pad, calcination does not fall off, resistance to friction and high temperature, strong braking force, to ensure high braking force under extreme conditions. The friction material is specially added with copper fib