ZTZ IIIPRO E4 MTB Hydraulic Disc Brake Set, 4-Piston Hydraulic Brake Kit with Ceramic Brake Pads for Mountain Bike（Pre-Bled, Front 800mm and Rear 1550mm）

【Powerful 4-Piston Hydraulic Disc Brake】The 4-piston design synchronized oil pressure for deliver 641N braking force, outperforming standard 2-piston systems by 41%，with 7.2ft shorter stops at 30km/h.Suitable for most mountain bikes, electric ebike,fat bike,folding bike 【Ceramic Metal Brake Pads】Built with an aluminum alloy ceramic heat dissipation layer, these pads reduce braking surface temperature by up to 30%, ensuring consistent performance even on long descents.With over 95% noise reduction compared to traditional resin pads, they deliver ultra-quiet operation 【Durable Yet Ultralight】Weighing only 230g (front) and 245g (rear), these 4-piston hydraulic brakes offer the perfect balance of strength and weight.Installation Reminder: Please remove the clamp protection piece before installation, and avoid squeezing the brake lever without a rotor or spacer in place to prevent damag 【Pre-Measured Hose Lengths】Integrated left front brake hose: 800mm (31.5"), rear split-style internal routing brake hose: 1550mm (61.0").

Please double-check your bike’s cable routing and frame size before purchasing to ensure the hose lengths are a perfect fit for your setup 【Caveat 】This brake set does not include mounting adapters. If your fork and frame use Post Mount (A-pillar) design, the calipers can be directly installed with 160mm rotors.

For other mount types (e.g., IS mount or Flat Mount), you will need to purchase the appropriate adapter separately based on your bike’s specifications