Bleeding the Brakes on a 2009 Honda CBR1000RR ABS

Shop parts for a 2009 Honda CBR1000RR ABS Motorcycle.

What This Bleed Covers on This CBR

The 2009 Honda CBR1000RR ABS uses hydraulic disc brakes at both ends, and the ABS designation confirms that this model is equipped with an anti-lock braking system. That means the front lever and the rear pedal each push fluid through a hydraulic circuit, and both circuits can be refreshed at the caliper bleeders. For routine fluid replacement and normal air removal at the calipers, a standard bleed is generally the right approach. The ABS unit itself is a different matter: if the reservoir has run dry, if the ABS unit or its lines have been disconnected, or if you suspect air has traveled into the ABS hardware, the bike may need a dealer-level procedure or diagnostic tool. Do not try to invent an ABS bleed sequence at home. If that is the situation, stop and take the motorcycle to a shop.

This article is about removing old fluid and trapped air from the hydraulic brake system. It is not a pad replacement, rotor swap, caliper rebuild, or brake line installation guide. Those jobs can create the need for a bleed afterward, but the focus here is the bleed itself.

When a Bleed Is Due

Brake fluid absorbs moisture over time, which lowers its boiling point and can make the brakes fade under hard use. Even if the bike still stops well, many riders refresh the fluid on a regular schedule as preventive maintenance. A bleed is also called for when the front lever feels spongy or soft, when it pulls closer to the grip than it used to, when the rear pedal feels vague, or when the fluid in either reservoir looks dark or cloudy. Any work that opened the hydraulic system—new lines, caliper service, or master cylinder work—should be followed by a proper bleed before the bike is ridden normally.

Tools and Supplies to Stage First

  • Fresh brake fluid of the type marked on the master cylinder reservoir cap, from a sealed container
  • A box-end wrench that fits the bleeder valve
  • Clear tubing that fits snugly over the bleeder valve
  • A catch bottle for used fluid
  • Rags or shop towels
  • A syringe or turkey baster for removing old fluid from the reservoir
  • A screwdriver or driver that fits the reservoir cap screws

A one-way check-valve bleeder or a vacuum bleeder can make the job easier when you are working alone, but the basic lever-and-bleeder method works with the items above.

Preparing the Bike and Protecting Surfaces

Support the CBR securely upright on a stand so it cannot tip while you are working. Turn the handlebars so the front reservoir sits level before you open it. Cover painted bodywork, plastic panels, and the instrument area with rags, because most brake fluids damage paint and plastic on contact. If a spill happens, wipe it up immediately and rinse the area with water. Keep the reservoir cap and diaphragm clean and set them aside where they will not pick up grit.

Bleeding the Front Brake

  1. Open the front reservoir and use the syringe or baster to remove most of the old fluid. Do not let the reservoir run dry.
  2. Refill the reservoir with fresh fluid of the type marked on the cap.
  3. Attach the clear tubing to the front caliper bleeder and route the other end into the catch bottle.
  4. Squeeze and hold the front lever.
  5. Open the bleeder about a quarter turn to let fluid and air escape.
  6. Close the bleeder before releasing the lever.
  7. Repeat the squeeze-hold-open-close-release sequence until fresh, clean, bubble-free fluid comes through the tube.
  8. Keep topping off the reservoir throughout so it never runs low enough to draw air back in.

If your front end has more than one caliper, treat each caliper as its own bleed point and do them one at a time. As a general practice, start with the caliper farthest from the master cylinder, then move to the other side. Keep the reservoir level as you switch sides.

Bleeding the Rear Brake

  1. Open the rear reservoir and remove most of the old fluid without letting the reservoir run dry.
  2. Refill with fresh fluid from the sealed container.
  3. Fit the clear tubing over the rear caliper bleeder and route it into the catch bottle.
  4. Press and hold the rear pedal.
  5. Open the bleeder about a quarter turn.
  6. Close the bleeder before releasing the pedal.
  7. Repeat until the fluid in the tube is clean and free of bubbles.
  8. Check the reservoir level often and top it off as needed.

The rear circuit is smaller, so it often takes fewer strokes, but the rule is the same: close the bleeder before you release the pedal so air is not pulled back into the caliper.

Finishing, Leak Checks, and Test Ride

When both circuits are done, tighten each bleeder snugly without overtightening. Fill each reservoir to the correct level marking, reinstall the diaphragm and cap, and clean any spilled fluid from the bike. Check for leaks at the bleeder valves and at the banjo fittings. Before riding, the front lever and rear pedal should feel firm and consistent, not spongy, and they should not slowly sink under steady pressure. Spin each wheel to confirm the brakes are not dragging. Test the brakes at low speed in a safe area before riding normally.

When to Stop and Take It to a Shop

If the lever or pedal will not firm up after several bleeding attempts, if it firms only after pumping, if bubbles keep appearing, or if fluid is leaking from the master cylinder or a caliper, stop and have the bike inspected. The same applies if the reservoir ran dry, if the ABS unit or its lines were disturbed, or if you are unsure whether air entered the ABS hardware. On an ABS-equipped CBR1000RR, a routine caliper bleed is manageable at home, but ABS-level air and persistent hydraulic problems are best handled by a shop with the correct procedure and tools.

Related Shopping Categories

Shop Brake Fluid for a 2009 Honda CBR1000RR ABS Motorcycle.

Shop Brake Lines for a 2009 Honda CBR1000RR ABS Motorcycle.

Shop Brake Pads for a 2009 Honda CBR1000RR ABS Motorcycle.

Shop Stands for a 2009 Honda CBR1000RR ABS Motorcycle.

Shop Brake Tools for a 2009 Honda CBR1000RR ABS Motorcycle.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.