How to Change Mountain Bike Pedals: A Step-by-Step Guide

Last Updated on October 1, 2026 by Md Arifur rahman

Changing your mountain bike pedals is a surprisingly simple task that most riders can do themselves. You’ll need a pedal wrench or an Allen key, and a little bit of know-how. Following the correct direction for loosening (remember: righty-tighty, lefty-loosey for most things, but pedals are the opposite!) is key to success and avoiding damage to your crank arms. We’ll guide you through the process to get you back on the trail quickly.

Whether your current pedals are worn out, you’re upgrading to clipless pedals, or you just want a fresh look, knowing how to swap them out is a handy skill. It’s a task that saves you money and time compared to visiting a bike shop. Many riders find it empowering to perform basic maintenance themselves, and pedal changes are a great starting point. We found that understanding the left and right threads prevents a lot of common mistakes.

• Use a dedicated pedal wrench or the right size Allen key.
• Remember pedals loosen in the opposite direction of tightening.
• Protect your crank arms from scratches.
• Grease the new pedal threads before installation.
• Tighten new pedals firmly to prevent loosening on the trail.

Ready to swap those pedals? Let’s walk through exactly how this works, step by step, so you can confidently tackle this bike maintenance task.

Swapping Out Your Mountain Bike Pedals

Changing your mountain bike pedals is a task that feels way more intimidating than it actually is. You don’t need to be a master mechanic to get this done. With just a couple of basic tools and a little bit of focus, you’ll have those old pedals off and your new ones spinning in no time. This is a super common maintenance job that can save you a trip to the bike shop and a bit of cash, too.

We found that the biggest hurdle for most people is remembering which way to turn the pedals to loosen them. It’s kind of like a secret handshake for bike parts. But don’t worry, we’ll break it down for you. Getting this right means you won’t strip threads or damage your crank arms, which is definitely a win. Let’s get your bike ready for your next trail ride.

Gathering Your Tools and Supplies

Before you start, make sure you have everything you need. Having your tools ready means you can get the job done smoothly without any frustrating pauses. This isn’t a complex job, but having the right gear makes all the difference.

Essential Tools You’ll Need

The most common tool for pedal removal and installation is a pedal wrench. These are usually thinner than standard wrenches, designed to fit easily between the pedal body and the crank arm. Many people also use a 15mm pedal wrench. If you don’t have one, don’t sweat it. Many modern pedals are designed to be installed or removed using a 6mm or 8mm Allen key (also known as a hex wrench) from the inside of the crank arm.

• Pedal wrench (15mm is common) OR Allen key (6mm or 8mm)
• Gloves (optional, but recommended to keep your hands clean)
• Rag or shop towel

Don’t Forget the Lube!

Grease is your best friend when installing new pedals. Applying a bit of anti-seize grease to the threads of your new pedals prevents them from seizing up in the crank arm. This makes future removal much easier and prevents corrosion. Many mechanics suggest this step, as it’s a small effort for a big payoff down the line.

Understanding Left and Right Pedal Threads

This is where many riders get tripped up. Pedals are threaded differently for the left and right sides. You can’t just put any pedal on either crank arm. Knowing this simple rule will save you a lot of headaches. We found that remembering the mnemonic “lefty-loosey, righty-tighty” doesn’t quite apply here for loosening.

The Golden Rule: Direction of Loosening

For both the left and right pedals, the loosening direction is the same. You will always turn the pedal counter-clockwise to loosen it. Think of it this way: you’re turning the wrench away from the bike’s front end. This is the opposite of how you’d typically loosen a bolt.

Installation Direction for Tightening

When you’re putting new pedals on, you’ll thread them in clockwise. Again, this applies to both the left and right pedals. You’re essentially tightening them towards the bike’s front end.

Here’s a handy table to remember it:

Pedal Side	To Loosen	To Tighten
Right (Drive Side)	Counter-clockwise (Away from bike front)	Clockwise (Towards bike front)
Left (Non-Drive Side)	Counter-clockwise (Away from bike front)	Clockwise (Towards bike front)

So, to sum it up: always turn pedals counter-clockwise to remove, and clockwise to install. Easy enough, right?

Removing Your Old Mountain Bike Pedals

Now for the actual removal. It’s best to do this with the bike upright or leaning against a wall. Some people like to put the bike in a stand, but that’s not strictly necessary for this job.

Positioning for Removal

The easiest way to get leverage is to position your wrench. For the right pedal (the one on the side with your chainrings), place the pedal wrench so it points straight back, parallel to the ground. Then, push down on the wrench handle. You might need to put some decent force into it. If you’re using an Allen key, insert it into the crank arm and turn counter-clockwise.

For the left pedal, it’s a bit trickier. You’ll want to position the wrench pointing forward, parallel to the ground. Then, push down. Alternatively, some people find it easier to stand over the bike, place the wrench pointing forward, and pull up on the wrench. Again, if using an Allen key, turn counter-clockwise.

Breaking Them Free

Sometimes, pedals can be really tight, especially if they haven’t been removed in a long time. If you’re struggling, try wiggling the wrench a bit to help break the seal. A little bit of persistence is often all that’s needed. We found that a firm, steady pressure works better than sharp, jerky movements.

Protecting Your Crank Arms

While you’re wrestling with those pedals, try to be mindful of your crank arms. You don’t want to accidentally slip and gouge the finish. Some people like to wrap a rag around the crank arm as a little buffer. If you’re using an Allen key, it’s less likely to slip and cause damage.

Installing Your New Mountain Bike Pedals

Installing is generally easier than removing, mainly because you’re not fighting against old grease or corrosion. Just remember the threading direction!

Prepare the New Pedals

First, identify your new pedals. They should be marked “L” for left and “R” for right. Take your grease and apply a thin layer to the threads of each pedal spindle. This ensures they go in smoothly and makes future removal a breeze. Don’t overdo it, just a nice even coat.

Threading Them In By Hand

This is a super important step. Always start threading the pedals in by hand. Try to thread the right pedal into the right crank arm clockwise. Do the same for the left pedal on the left crank arm. If you feel resistance right away, stop. You might be trying to thread the wrong pedal, or you might be cross-threading it. If it doesn’t thread in smoothly by hand, don’t force it. Back it out and try again. We found that starting them by hand prevents so many potential problems.

Tightening Your New Pedals

Once the pedals are threaded in as far as you can by hand, it’s time to tighten them with your tool. Use your pedal wrench or Allen key and tighten them firmly clockwise. You want them snug, but don’t go crazy and overtighten them. A common guideline is about 30-40 Newton-meters of torque if you have a torque wrench, but most people just tighten them until they feel very secure. A good rule of thumb is to tighten them until you feel firm resistance. Remember, they can loosen up slightly after your first ride, so it’s good to check them then.

Final Checks and Tips

You’re almost done! Just a few more things to ensure your new pedals are ready for the trail.

Double-Check the Tightness

After installation, give each pedal a good wiggle. They shouldn’t feel loose at all. It’s a good idea to re-check the tightness after your first short ride. Sometimes, the initial torque can settle a bit.

Keep Your Tools Handy

For the first few rides, it might be wise to carry a multi-tool with the correct size Allen key, just in case. This way, if you notice a pedal loosening, you can quickly tighten it on the trail.

Pedal Care Checklist:

• Confirm Left/Right Markings: Ensure pedals are correctly matched to crank arms.
• Grease Threads: Always apply anti-seize grease before installation.
• Start By Hand: Thread pedals in by hand first to avoid cross-threading.
• Tighten Firmly: Secure pedals with your wrench or Allen key.
• Check After First Ride: Re-tighten if necessary after a short outing.

Conclusion

You’ve now learned the straightforward process of changing your mountain bike pedals. Remember the key is understanding the reverse threading: always loosen counter-clockwise and tighten clockwise, regardless of the side. Greasing those new threads is a small step that pays off big time later. With the right tools and this know-how, you’ve successfully upgraded your ride or replaced worn-out parts yourself.

Take your bike for a short spin to confirm everything feels secure. You’ve got this maintenance skill in your toolkit now! Don’t hesitate to tackle other simple bike jobs to build your confidence.

Frequently Asked Questions

How do I know if I need to change my mountain bike pedals?

You might consider changing your pedals if they feel loose, the bearings are grinding, or the platform is damaged and no longer provides good grip. If you’re upgrading for better performance, like switching to clipless pedals, that’s another common reason. Worn-out pedals can affect your control and comfort on the trail.

Can I use a regular wrench to change my bike pedals?

While a regular wrench might fit some pedal nuts, it’s generally not recommended. Pedal wrenches are thinner and designed to get a good grip between the pedal and crank arm without slipping. Using the wrong tool increases the risk of stripping the pedal or damaging your crank arm, so it’s best to use the proper tool.

What happens if I accidentally put the wrong pedal on the wrong side?

If you try to force a pedal on the wrong side, you’ll likely encounter resistance very quickly. You might start cross-threading the pedal spindle, which can damage both the pedal and the crank arm threads. Always double-check the “L” and “R” markings on your new pedals before installation.

How tight should new bike pedals be?

New pedals should be tightened firmly to prevent them from loosening during your ride. If you have a torque wrench, aim for about 30-40 Newton-meters. For most riders, tightening until you feel solid resistance is sufficient. It’s always a good idea to check their tightness again after your first short ride.

Is it safe to ride with slightly loose pedals?

It’s not recommended to ride with even slightly loose pedals. Loose pedals can affect your pedaling efficiency and control, and more importantly, they can unscrew themselves further while you’re riding, which can be dangerous. Always ensure your pedals are securely tightened before hitting the trail.