ZTZ MTB Hydraulic Disc Brake Set, 4 Piston Hydraulic Brakes with Ceramic Pads, Front 850mm & Rear 1550mm Hoses, Compatible with Mountain Bike,Ebike,Fat Bike （Pre-Bled） (Purple)

["【High-Power 4-Piston Braking Performance】Engineered with a true 4-piston hydraulic system, delivering up to 45% more braking force than standard 2-piston brakes. Reduces stopping distance by up to 7.2 ft at 30 km/h, providing stronger, more balanced braking with confident one- or two-finger control on trails and descents","【Ceramic Pads –Quieter, More Consistent】Equipped with ceramic-metal composite brake pads that lower braking surface temperatures by up to 38%, maintaining stable performance on long descents. Designed to deliver significantly reduced noise compared to traditional resin pads for smoother, quieter braking","【CNC-Machined Aluminum – Strength Without Extra Weight】Precision CNC-machined calipers and levers are built from high-strength aluminum alloy, ensuring rigidity and durability under load. Lightweight design at just 215g (front) / 238g (rear) improves overall bike handling and responsiveness","【Pre-Bled System – Easy Installation】Pre-filled with mineral oil for true plug-and-play setup—no bleeding required. Hose lengths: 850mm (front) / 1550mm (rear). Designed for straightforward installation on most standard bike frames. Please confirm routing compatibility before purchase","【Wide Compatibility for MTB & Ebikes】 Compatible with most mountain bikes, eBikes, fat bikes, folding bikes, trail and downhill setups. Designed for Post Mount frames (160mm rotors). Other mounting standards may require additional adapters (not included)"]