When To Bleed Mountain Bike Brakes?

When To Bleed Mountain Bike Brakes? – [Complete Information]

In our lives, we enjoy things we generally go on the trip with our mountain bike to refresh our minds. Same as Mountain bikes need refreshments too.

That refreshment is to bleed mountain bike brakes.

Hybrid mountain bike brakes provide superior performance compared to their cable equivalents but need more maintenance, which generally equates to brake bleeding. Most mountain cyclists will put off bleeding their brakes, but this will reduce their stopping power.

On mountain bikes, the hydraulic braking systems will become unreliable and spongy. Bleeding brakes are necessary at least once every six months for more experienced mountain cyclists who often ride downhill or on more difficult terrain.

Less-experienced riders, however, should do it once a year or once every two years, depending on how frequently they ride.

Your hydraulic brakes may need bleeding for several reasons. I’ll go through the basics and detail of when to bleed your MTB brakes. Keep reading:

When Should You Bleed Your Mountain Bike’s Brakes?

Bleed Mountain Bike Brake

Regular bleeding of the brakes is a need for every mountain biker. Brake bleeds should be performed every six months if you are a frequent rider with a lot of expertise.

Regular cyclists should do it once every year, while occasional riders should do so once every two years.

If your brakes feel soft or weak, it’s time to get a new fluid. On the second hand, there are a few more instances in which you should change your hydraulic brake fluid. Let’s examine the many situations that call for bleeding the brakes.

Spongy Lever Action:

A spongy or mushy feeling in the brake lever is the most prevalent reason for a brake bleed.

A spongy brake pedal is a sure sign that your vehicle needs a service since hydraulic brakes are more precise than cables.

Typically, the cause is air in the braking system. When you wreck your bike, even a slightly loose screw or component might allow a small air bubble to sneak into your braking system, reducing its effectiveness.

Flushing or bleeding your hydraulic mountain bike brakes is likely necessary if you notice any sponginess while applying the brakes.

Parts Replacement:

Depending on what’s being changed, a brake flush or bleed is always necessary after working on the brakes.

The hydraulic oil lines that connect the lever to the brake are a common wear item. Over time, these lines might dry up and break. In addition, a fall might rip or pinch the lines.

Mountain bike brakes must be flushed, bled, or maybe both after replacing any part that opens the closed hydraulic braking system.

Opening the hydraulic system to replace a component, such as a leak, allows air to enter the system. Once again, if the air is in the braking system, the brakes will be ineffectual or feel mushy.

Brake Fluid Leakage:

Bleed Mountain Bike Brakes

When the brake fluid leaks, a significant risk that air has entered the braking system exists. In addition, debris may have entered the system if a seal was broken.

Finding the cause of the leak is essential before replacing any broken parts. A brake bleed is necessary whenever air gets into the hydraulic system.

Grinding Or Friction Feeling In Lever:

Hydraulic brakes may sometimes cause a grinding or squeaking sensation when applying pressure to the brake pedal. You should check all parts and cleanse the brake fluid when this happens.

Detecting seal or mechanical component damage by cleaning the braking fluid and looking for metal shavings or other debris is possible. The lever usually breaks after a bike accident.

Bleeding the brake lines involves removing air from the system and should be performed whenever the hydraulic oil is flushed or changed, whether for a damage examination or for periodic maintenance.

Riding frequencyRiding styleBarke bleeding frequency
1-2 times a monthcross country, trailonce every two years
1-2 times a weekcross country, trailonce a year
1-2 times a monthdownhill, enduroonce a year
3-5 times a weekcross country, trailonce every six months
1-5 times a weekdownhill, enduroonce every six months

(even three times a year)

The chart above guides how frequently you should bleed hydraulic brakes to get the most out of their performance and guarantee adequate stopping force.

Remember to check the bleeding of your hydraulic disc brakes; having effective stopping power is crucial in many scenarios.

Why Do You Need to Bleed Your Mountain Bike’s Brakes?

putting oil in brake

You should bleed your mountain bike’s disc brakes if you notice that they are mushy or not performing as they should.

You can keep air bubbles out of your braking system and have reliable stopping power by bleeding the brakes periodically.

When brakes are bled, contaminated fluid is flushed out. You’ll have an easier time applying the brakes and a more comfortable ride. A vacuum, syringe, or pressure may all be used to accomplish this.

Improve your bike’s stopping power and increase safety by bleeding the brakes before each ride.

You need all the stopping power you can get while cycling in the rain or snow.

The primary reason you’re bleeding the brakes now before there’s a problem is so that you can stop quickly and easily while you’re racing down the trail.

How to Tell If Your Brakes Need Bleeding?

Over time, you’ll be able to feel the difference if you don’t bleed your hydraulic brakes. Here are several warnings that your brakes need to be bled:

Brake fluid leaking:

A dependable set of brakes is only possible once the broken seals are repaired.

They feel spongey:

If the brake pedal gives way when you draw on it, the air is trapped in the system and has to be released.

The lever may be pulled towards the handlebar:

You must bleed the brakes since there’s too much air in the system.


Regularly bleeding your MTB brakes can boost your safety on the trails and give you the braking performance you paid for.

If you ride a lot, you should bleed your brakes at least once every six months. However, you may do it more often if you ride a lot.

Experienced riders will gain the most from better brake performance.

Frequently Asked Questions (FAQs)

Do new MTB brakes require bleeding?

Flushing or bleeding the mountain bike brakes, or maybe both, is necessary after repairing or replacing any part that opens the closed hydraulic braking system.

Like a leak, replacing a component in an open hydraulic system will bring air into the system.

Do you have to bleed the brakes each time?

Experts in automotive servicing suggest having your vehicle’s brake fluid drained every two to three years.

You may opt to have a certified mechanic do the service in conjunction with your regularly scheduled brake service, or you can attempt to handle it yourself.

Related Articles:-

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *