Brake bleeder kits are essential for any serious motorcyclist. They make the process of changing brake fluid a lot more convenient. This is beneficial for changing fluid, brake lines, and generally keeping your brakes optimized for high performance.

In this article, we delve into some useful tips and suggestions when it comes to using brake bleeder kits and how to make the most out of this motorcycle tool.

For more help, don’t hesitate to reach out to the team here at Venhill.

What are Bleeder Kits?

Bleeder kits are designed to support and improve the process of changing or draining brake fluid. This helps motorcyclists change or drain fluid at home, often saving on the expense of taking the bike into a garage or using a professional mechanic to help.

Bleeder kits leverage various components to allow a single individual to change the fluid, again, helping make the whole process much easier and simpler.

Here at Venhill, our bleeder kits include:

  • Vacuum pump with pressure gauge.
  • 2 long clear hoses
  • 1 short hose for collection chamber
  • Collection chamber & Lid
  • 1 thinner hose for adapter use
  • 14 flexible adapters - various sizes
  • Instruction Manual & Venhill sticker

Changing Brake Fluid

It is recommended that brake fluid is changed at least every 2 years. Over time, brake fluid absorbs water and performance is compromised. Although you may not feel lower performance under normal circumstances, it is when you brake suddenly (i.e. in an emergency), when this lower braking performance is felt.

DOT 4 brake fluid is most commonly used but check with your motorcycle manual for recommended brake fluid for your particular bike.  

How Bleeder Kits Work

If you own a motorcycle, at some stage you will need to bleed the brake fluid. Luckily, a bleeder kit makes this a simple job and nothing to worry about. It also prevents you needing to take the bike into a garage and pay for a mechanic to do it.

Regularly cleaning your bike, replacing brake fluid and general maintenance will really help keep your bike in tip top condition and performing well for years to come.

Before you start, ensure you have the correct brake fluid for your bike. The motorcycle manual will include recommendations for which brake fluid is needed. It is also recommended to cover up any paintwork around the brake fluid reservoir to avoid any fluid damaging it. Brake fluid can strip paint away, so you want to be extra careful. It is also worth wearing gloves as you don’t want to get brake fluid on your hands or skin.

As you begin, this is also the perfect time to inspect the brake fluid reservoir cap and components to check there is no damage to these. Any cracks or holes in the plaster or rubber could be causing issues so give these a clean and ensure there are no problems.

You’ll want to start by identifying the bleed valve on the bike and attach the bleeder adapter to it. Find a suitable adapter from the kit (our kits have 14, making it easy to find one that fits perfectly on your bike). Make sure the fitting is tight and secure. Use the vacuum pump with the pressure gauge to draw out the fluid (between 15-20 psi).

The bleed tube should be connected to your motorcycle brake caliper and the master cylinder reservoir topped up with brake fluid whilst bleeding.

It’s now time to loosen the bleed valve (unscrew the bleed valve ¼ to ½ a turn to open the caliper). As you pump, a vacuum is created which should now result in the older brake fluid coming out and collecting in the collection chamber. As the fluid comes out, the pressure gauge will go down. The older fluid is likely to be darker in colour, often brownish.

Be sure to top up the brake fluid with new fluid so you can see when the old is fully flushed and no longer in the system. Also, this helps prevent the fluid getting too low, which can result in air getting into the system.

Close up the bleed nipple and pump the gauge again, repeating the process until the new brake fluid starts to come out in the collection chamber.

Ensure the collection chamber does not overfill to the top otherwise brake fluid will get into the pump. The old brake fluid is not suitable to go down the sink and needs to be disposed of correctly. This means taking it to a certified waste disposal centre.

Attaching Brake Lines

To attach new brake lines, you would follow this process and then install your new brake lines. Braided brake lines are a great way to improve the performance of your bike. Here at Venhill, we have a wide selection of brake lines and hoses, suitable for any type of motorcycle.

Upgrading your brake lines will mean they last longer, therefore you won’t need to replace the lines as often.

Venhill Brake Bleeder Kit

Here at Venhill, we have a brake bleeder kit designed to make this whole process as simple as possible. Our Vampire vacuum pump bleeder kit features quality tubing and sturdy metal pump, fit for any conditions. Built to last, this vacuum pump is an essential tool for any motorcyclist that wants to be able to change/drain brake fluid fast and conveniently. It works with all types of motorcycles and brake systems and comes with 14 adapters for the bleed nipples. The included adapters are flexible rubber so you can force them over various bleed nipples to fit tightly.

The clear hose also makes it easy to monitor the fluid coming out, so you know when the old fluid is completely drained.

Our Venhill Vampire Bleeder Kit also comes with step by step instructions making it easy to follow along.

For more information on our bleeder kits, brake lines and other components, simply get in touch with us or browse our online shop.