IIIPRO CNC 4-Piston Flat Mount Hydraulic Disc Brake Caliper

4-Piston Braking Power. CNC Precision. Lightweight Performance.

Upgrade your bike's braking system with the IIIPRO CNC 4-Piston Hydraulic Disc Brake Caliper, designed for riders looking for powerful braking, lightweight construction, and distinctive anodized finishes.

Featuring a one-piece CNC-machined aluminum alloy body and a dual-sided four-piston braking system, this caliper is designed to apply braking pressure from both sides of the rotor for controlled braking performance.

Weighing approximately 85g per caliper, excluding brake pads and mounting bolts, it offers a lightweight option for compatible road and gravel bike builds.

Key Features

4-Piston Hydraulic Braking System

Four pistons work in opposing pairs to apply braking force from both sides of the rotor.

• Dual-sided piston actuation

• Four-piston configuration

• Balanced pad pressure

• Designed for controlled, powerful braking

One-Piece CNC Aluminum Alloy Body

Precision CNC-machined aluminum alloy construction provides a compact, rigid caliper body.

• One-piece aluminum alloy design

• CNC-machined construction

• Lightweight structure

• Precision-machined mounting surfaces

Lightweight Design – Approx. 85g

Each brake caliper weighs approximately 85g, excluding brake pads and mounting bolts.

An ideal option for riders interested in lightweight road bike components.

High-Performance Heat-Dissipating Brake Pads

The included brake pad design features a metal-based friction material and a heat-dissipating backing structure.

Designed to help manage heat during braking.

Mineral Oil Hydraulic System

Designed for mineral oil hydraulic braking systems.

Compatible with BH59 / BH90-type brake hose connections, subject to correct fitting and hydraulic system compatibility.

Do not use DOT brake fluid.

140mm / 160mm Rotor Compatibility

Designed for use with compatible 140mm and 160mm brake rotors.

Correct mounting hardware or adapters may be required depending on the frame, fork, and rotor configuration.

Five Anodized Color Options

Available in:

• Black

• Silver

• Blue

• Purple

• Red

Choose a finish to match your bike's custom build.

Technical Specifications

Available Purchase Options

Single Caliper

Includes one IIIPRO 4-piston hydraulic brake caliper.

Pair

Includes two IIIPRO 4-piston hydraulic brake calipers.

Important Installation & Compatibility Information

• Verify the mounting interface and bolt-hole dimensions before ordering.

• Check compatibility with your existing hydraulic brake lever, hose fittings, and mineral oil system.

• Brake caliper compatibility cannot be determined by hose type alone.

• Maximum stated brake pad thickness is 2.2mm; however, pads thicker than 2.0mm are not recommended by the supplier because adjustment may become difficult.

• Do not overfill the hydraulic reservoir or caliper with mineral oil.

• Use only compatible brake pads, fittings, and mounting hardware.

• Professional installation and bleeding are strongly recommended.

• Always check brake operation, rotor clearance, and hydraulic sealing before riding.

Safety Notice: Brake components are safety-critical. Installation should be carried out by a qualified bicycle mechanic. Incorrect setup may result in reduced braking performance or brake failure.

Verificação de compatibilidade: Devido à complexidade dos modelos e lotes das peças do fabricante de equipamento original (OEM), podem existir casos em que este produto seja incompatível.

Ao receber este produto, compare-o com as especificações OEM para garantir a compatibilidade antes da instalação.

Especificações de binário: Instale este produto estritamente de acordo com os valores de binário especificados no manual das peças OEM. Problemas de instalação: Se encontrar quaisquer discrepâncias com as especificações OEM ou enfrentar dificuldades na fase inicial da instalação, pare imediatamente e contacte o serviço de apoio ao cliente para obter assistência com devoluções ou trocas.

Não forçar a instalação: Não force a instalação em circunstância alguma. Responsabilidade: Quaisquer danos resultantes de uma instalação forçada ou de modificações não autorizadas deste produto (ou dos seus componentes) serão da exclusiva responsabilidade do comprador.

Todos os produtos são fotografados de forma a representar com precisão as cores que verá ao recebê-los.

Devido a diferenças na iluminação, ângulos ou definições do ecrã, podem ocorrer ligeiras variações de cor.

O produto real deve ser considerado a referência. Para produtos "coloridos" e "azuis", o processo de coloração pode resultar numa distribuição irregular da cor, tornando cada produto único.