BUCKLOS Zoom MTB 4 Piston Hydraulic Disc Brakes Set, Left Front 800mm Right Rear 1400mm Mountain Bike Hydraulic Brake Aluminum Alloy Lever with Caliper is/PM Adapter (Pre-Bled) - 900309

• 4 piston hydraulic disc brakes：Bucklos hydraulic brakes for mountain bike is the best Upgrade kit from mechanical brake, Zoom hydraulic brakes caliper have 4-piston oil pressure which is more braking capacity than 2 pistons, helping you braking easier, keep you safe Quiet braking: This hydraulic bike brakes adopt integrated hydraulic cylinder to prevent oil leakage, The brake pad is made of resin-metal composite pads, which not only ensures quiet when braking, but also protect your disc rotors Compatible most bikes: mtb hydraulic brake set suitable for most mountain bikes, electric ebike,fat bike,folding bike (You only need to consider whether the tube is long enough） Easy to install: mtb hydraulic brakes uses mineral oil fluid(pre bled), unboxing ready to install and use. Please do not remove the yellow pad pinch the brake lever and before installation, and otherwise it will cause oil leakage Brake size: for this hydraulic brakes set, left side controls the front, right side controls the rear, fits the habit of most people cable of front is 800mm, cable of rear is 1400mm.