The RISK RL318 / RL256 Hydraulic Disc Brake Piston Tools are practical maintenance tools for bicycle hydraulic disc brake calipers.

The RL318 Single-Side Caliper Piston Movement Tool is used to hold one side of the caliper piston while allowing the opposite piston to move out. This makes it easier to clean dirt around the piston, check piston movement and perform brake caliper maintenance. The tool is marked for 2-piston and 4-piston calipers, making it easy to position during use.

The RL256 Hydraulic Disc Brake Piston Reset Tool is used to push brake pistons back into the caliper evenly. It is useful when replacing brake pads, adjusting piston position or servicing hydraulic disc brakes.

Both tools are lightweight, compact and easy to store. They are suitable for bike shops, home mechanics and riders who regularly maintain hydraulic disc brake systems.

Key Features

• Designed for hydraulic disc brake maintenance
  Helps reset, press and move brake caliper pistons.
• RL318 for single-side piston movement
  Holds one side of the caliper piston and allows the other side to move out for cleaning or inspection.
• RL256 for piston reset
  Helps push pistons back into the caliper during brake pad replacement or brake servicing.
• Suitable for 2-piston and 4-piston calipers
  RL318 includes clear positioning marks for different caliper types.
• Lightweight and compact
  Easy to carry, store and use in a workshop or home tool kit.
• Practical brake service tool
  Useful for cleaning piston edges, correcting uneven piston movement and maintaining brake feel.
• Easy to use
  Simple tool design for quick hydraulic brake maintenance.

Product Options

Specifications

Package Includes

RL318

• 1 × Single-Side Caliper Piston Movement Tool

RL256

• 2 × Hydraulic Disc Brake Piston Reset Tools

Note: Brake calipers, bikes and other accessories shown in the pictures are for display only and are not included.

Notice

1. Please choose the correct tool according to your maintenance needs.
2. RL318 is designed for single-side piston movement and piston cleaning.
3. RL256 is designed for pressing/resetting hydraulic brake pistons.
4. Brake calipers, bikes and other display items shown in the images are not included.
5. Manual measurement may cause slight size or weight differences.
6. 3D-printed surface lines or seams may be visible on RL318; this is a normal manufacturing texture and does not affect use.