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Home » Peloton » How to Replace a Peloton Bike Crank Arm?

How to Replace a Peloton Bike Crank Arm?

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peloton crank arm replacement

The Peloton bike crank arm is one of the most stressed components on the bike, so it’s not uncommon for it to bend, crack, or fail over time. Some crank arms get damaged during transport, others bend from improper pedal installation, and in some cases, impact or over-tightening causes long-term wear.

No matter the cause, a damaged crank arm must be replaced to keep your bike safe and fully functional. In many situations, Peloton will arrange a technician visit or send a third-party service (such as XPO) to handle the repair. However, this process can take days—or even weeks. If you’re comfortable with basic tools and want your bike back in action faster, replacing the crank arm yourself can be a practical option.

Before getting started, it helps to understand the part you’re working with.

What Is a Peloton Bike Crank Arm?

A bike crank arm is the solid metal lever that connects each pedal to the crankshaft. It transfers the power from your legs into the bike’s drivetrain. If the crank arm is bent, cracked, or loose, the pedals may wobble, slip, or even detach—creating a serious safety risk. That’s why a faulty crank arm should never be ignored and should be replaced as soon as possible.

So, How to Replace a Peloton Arm Crank?

You will need the following tools to remove and replace a Peloton crank arm successfully;

  • A crank puller – View On Amazon
  • 5mm Allen key
  • Phillips head screwdriver
  • Spanner

How to Remove a Peloton Arm Crank

  1. Turn the resistance knob all the way to the right, which will keep the pedals from moving during the process.
  2. Using a Phillips screw head driver, remove the belt screws around the belt. This will loosen the belt cover so you can remove it from the bike with ease.
  3. Next, use the 8mm Allen key to rotate the hex bolt connecting the crank arm to the shaft to the left to loosen it. Then, remove the hex bolt and keep it safe because you will need it during replacement.
  4. Finally, you can use the crank puller. First, loosen the bolts at the silver head of the crank puller. Then, put the silver piece at the top of the crank arm where you removed the hex bolt. Tighten the loosed crank puller bolts onto the crank arm to the right until they feel tight and can’t turn anymore. Next, turn the black arm of the crank puller to the right as you apply some force on the crank arm. This will pull the crank arm out. So, unscrew the crank puller from the crank arm and place them separately.
  5. After that, use a spanner to remove the pedal from the crank arm if the pedal is still functional. 
  6. Then, using a 5mm Allen key, loosen all the screws attaching the crank arm to its bracket. This will help you to easily remove the screws and hence remove the crank arm from its bracket.

Replacing the Peloton bike right crank arm

Peloton left crank arm change

How to Replace a Peloton Bike Crank Arm

At this point, the bike is ready for a new crank arm. So;

  1. Firstly, take the new crank arm and place it on the crank arm bracket.
  2. Secondly, take the 5 mm nuts and bolts and fix them onto the crank arm- crank arm bracket combo. You can also pull the nuts from the backside, which will provide optimal tension. Then, tighten them using the 5 mm Allen key to secure them.
  3. Thirdly, line up the new crank arm and sprocket, and place it on the left crank arm position on the bike where the original crank arm lay. Tighten it by rotating the hanging piece to the right.
  4. Fourth, put back the hex bolt and tighten it with the Phillips head screwdriver.
  5. Next, loosen the resistance knob to allow the belt to move. Then, loop the belt at the top of the sprocket.
  6.  Start turning the pedal backwards slowly until the belt covers the sprocket optimally.
  7. Reattach the pedal to the crank arm and turn it to the right to tighten it.
  8. Lastly, reattach the belt guard and screw in all the bolts around the belt area.

Will Peloton Replace My Crank Arm for Free?

Yes—as long as your bike is still under warranty, Peloton will replace the crank arm at no cost. This typically includes sending a new crank arm and arranging free service to install it, making sure everything is aligned and working properly.

Can I Replace the Peloton Bike Crank Arm Myself?

Yes, you can. If you’re comfortable with basic DIY repairs, replacing the crank arm on your own is absolutely possible. Peloton even allows self-replacement and may provide guidance if you contact support, so you’re not doing anything against their policies.

In a Nutshell

How do you replace a Peloton crank arm?
Because the crank arm is a sturdy, non-delicate component, most users can replace it themselves. The only specialized tool you’ll need is a crank arm puller. With the right steps and tools, the process is straightforward and manageable—even for first-time DIYers.

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Related posts:

  1. How To Remove Toe Cages for Peloton Bike (Step-by-Step Guide)
  2. How to Put on Peloton Shoes & Clip Into the Pedal – Beginners Guide
  3. How to Change / Remove Peloton Bike Pedals (Step-by-Step Guide)

Written by

Luky k.

Hi, I’m Luky K.! Since 2016, I have been working on my fitness. I am obsessed with my Peloton bike and Tread! These always have been helping me. I’m constantly attempting to stay fit through various forms of physical activities and ‍focus on the Nutritious diet. It hasn’t always been the easiest, and it’s taken a lot of dedication and learning what my body needs. During my first year, I had to deal with a lot of problems. Since then, I’ve learned a lot and also learning now. I love sharing my Peloton tips, fitness tips, fitness accessories guide, and healthy recipes.