bikefit q&A

Answers to Popular BikeFit Questions

We receive daily calls and e-mails with fantastic questions from cyclists all over the world.  Below you’ll find continually updated frequently asked questions and answers  If you have a question we haven’t answered, see the bottom of this page to submit!

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We are here to help!  If you don’t see your question answered here, feel free to reach out to a human via our hotline, 855-813-3233 or via e-mail, [email protected].



Wedges (Cleat and ITS)

How do I install my BikeFit Products?
How do I know which Cleat Wedges I need?

The Cleat Wedge type you need is determined by the type of pedal and cleat you use.  See this article for help finding the right one:

Finding the right Cleat Wedge


How many wedges do I need?

This answer is subjective and based on how the individual responds.  Our trained BikeFit Pros use the Forefoot Measuring Device (Physical or via the BikeFit Pro App) to assess varus or valgus tilt and use a formula based on your inherent tilt to suggest a starting amount of wedges.

BikeFit also provides a free app for Android customers to help discover foot tilt.  The chart below is also helpful to align the degree of varus tilt with the suggested starting point of cleat wedges.  If you are unsure, contact a local BikeFit pro or e-mail us.

What are the differences between Cleat Wedges and In-The-Shoe (ITS) Wedges?

Cleat Wedges® enable the cyclist’s foot/cycling shoe to connect with the pedal naturally by acknowledging the foot’s inherent angle. This results in a neutral foot position throughout the pedaling cycle meaning more comfort and power. There is more information on our Why Wedge? page.

ITS (in-the-shoe) Wedges® provide 1.5 degrees of inward angulation (aka “varus”) in cycling shoes that have ample room in the forefoot area. They are often used in conjunction with Cleat Wedges or as a quick way of determining if inward or outward forefoot angulation exists.  

What are "Varus" and "Valgus" Tilt?

BikeFit inherently uses terms from the medical world to describe some of the features in bike fitting.  In this vein,

Varus Tilt the ball of the foot (where you connect to the pedal) is canted or tilted up to the inside. To accommodate that anatomy, Wedges should be positioned with the thick portion towards the inside of the shoe.

forefoot varusforefoot valgus

Valgus Tilt the ball of the foot is canted up to the outside.  In this case, Wedges should be positioned with the thick portion towards the outside of the shoe. We recommend that a maximum of two (2) wedges be used in an initial fit for a Valgus foot.  

How thick are the cleat wedges?

Our cleat wedges are created with 1 degree of tilt (2 degrees for special purchase by bike fitters).  Using slope allows us to assure that no matter what size or type of shoe you use, the wedging degree will be the same.  

I'm using Crankbrothers Eggbeater 3's with the Quattro 3-Hole Cleat adapter. Do any of the cleat wedges fit the adapter?

Yes! Our 3-hole cleat wedges will fit underneath the adapter.  

Pedal Extenders

What is the difference between "hex+ 20mm" extenders and "20mm extenders"

The “hex+” extenders contain a 6-8mm adapter specifically designed for installation with pedals that require an 8mm wrench for install via the back of the crank.

hex+ Extender install








The regular 20mm extenders are solid, without a through-hole which means they only work with pedals that require a 15mm wrench for installation like the one below:


Do the Hex+ 20mm Pedal Extenders work with Garmin Vector 3 Pedals?

While the Hex+ Extenders are technically compatible with the Garmin Vector 3 Pedals, according to Garmin’s tech department, the RF signal is impacted by the pedal extenders.  The Vector 3 was created specifically to assure that the transponder sits about 2mm inside the crank.  With the pedal extenders, the transponder sits inside the cylinder of the extender.  While this is still a thru-hole pedal that would allow for the signal to be sent, it could be impacted.  

One of the other concerns is the thread length of the Garmin Vector 3 is longer (2mm). When you thread the Vector 3 into the pedal extender, you’ll need to use spacers to fill the gap caused by the extra thread length.

While we can’t say it’s technically not compatible, Garmin has said that the signal would be impacted.


Do you make a 5, 10, or 15mm Pedal Extender?

Unfortunately, no.   Neither a 5 or 10mm pedal extender is possible to create based on the thread length needed to install a pedal into a pedal extender.  Below is the measurement of a threaded pedal.  For safety, the extender would need at least the distance of the thread to be safe, but that is the bare minimum and no one wants their safety to be based on the bare minimum.

5mm thread pedal extender10mm thread pedal extender









When the Pedal Extenders were developed, the emphasis was placed on rider safety and helping riders experience the needed increased stance width to ride optimally.  In that process, the Pedal Extenders needed to be universal to fit the length of every possible pedal.  In order to satisfy the universal nature of the product, 20mm was used to not only have enough thread for every different pedal manufacturer but also to build up the stainless steel to assure that the extenders do not fail.

Can I install Pedal Extenders on my carbon cranks?

We do not recommend installing 20mm pedal extenders (either the hex+ or the regular) on carbon cranks.  

What size wrench do I need to install the 20mm Pedal Extenders?

For our regular 20mm pedal extenders (installed with wrench flats), you will need a 15mm wrench for the pedal itself and an 18mm wrench for the pedal extenders.  Many use an adjustable crescent wrench to do both.  

For the hex+ 20mm pedal extenders.  We provide an 8mm to 6mm adapter for the pedal.  This means that you’ll need a 6mm wrench for the installation.

Do you sell the 6-8mm adapter for the Hex+ Extenders separately?

We do sell these through special order.  Please contact us directly for details.

I cannot set my shoes to the proper angle to mimic my natural foot stance because both feet point outward slightly and strike the frame of the bike. Would the pedal extenders be a smart addition so that my heels won't make contact with the chainstay?

Short answer, absolutely.  Setting up cleat rotation in the proper angle is extremely important for injury prevention.  If you set up a toe-out stance where the heel makes contact with the chainstay, the pedal extenders will bring the foot out which will provide the clearance required.

Do I have to use the 1.5mm washer that included in the Hex+ 20mm Extender Package?

You are not required to use the 1.5mm spacer included.  We started including it specifically for Look Pedals.  Look increased the length of threads so we added the 1.5mm spacers to the package to compensate.

Hex+ 20mm Pedal Extender 1.5mm install

For those who do not have Look pedals, the 1.5mm spacers increase the extension if needed. 



Which Pedal Extenders do I need for my Peloton bike?

Peloton has multiple iterations of pedals they’ve used since the inception of their bikes.  You need to identify how you install and remove your pedals in order to see which type of pedal extenders you need.  If your pedals are installed via a hex wrench at the back of the crank, you need the hex+ 20mm pedal extenders

Peloton Pedals

In the case of the current pedals on the Peloton website (as of 2020), these contain wrench flats which means that our regular 20mm pedal extenders are compatible. 


Leg Length Shims

How many shims can I use with SPD / MTB Pedals?

The maximum we recommend is 3mm.  Once you add more than a 3mm Leg Length SPD Shim, instability may occur as the pedal body will not make contact with the bottom of the shoe if it is raised too much.

For those who require more than 3mm of lift with a 2-hole application, there are 3 options:

1.) Switch to a 3-hole style shoe and you can stack more LLS.

2.) Look into a pedal system that builds lift directly into the pedal.

3.) Custom Shoes.  Many custom shoemakers can create the lift in the base or as a layer in the shoe.

For recommendations, contact us directly.










The regular 20mm extenders are solid, without a through-hole which means they only work with pedals that require a 15mm wrench for installation.

How much should I shim for my leg length discrepancy?


In general, if you’d had the discrepancy for a long time (years) you’re body likely compensated for some of this issue so we recommend shimming for 1/2 of the total length.  For example, if you get an x-ray that shows an 8mm discrepancy which you’ve had your entire life, we recommend shimming for 4mm. 

As always, allow comfort to be your guide.  At times you may experience maximum comfort from less or more.









The regular 20mm extenders are solid, without a through-hole which means they only work with pedals that require a 15mm wrench for installation.

I need more than a 3mm Leg Length Shim for my SPD, 2-hole Pedals. You advise that using more than 3mm is not recommended. What should I do?

If you are using a 2-hole style cleat and would like to shim more than 3mm, there are 3 possible options.

1.) Speedplay Syzr – Speedplay provides custom lift options at the pedal with 2mm increments from 2mm to 15mm.  

2.) Custom Shoes – This gets pricy but many shoe manufacturers will build the extra lift into the shoe itself.  Contact us for some recommendations for custom shoe companies.

3.) Cobbler – Yes, there are some shoe specialists that still exist that may be able to custom create the base needed for an SPD LLS (Leg Length Shim).  








The regular 20mm extenders are solid, without a through-hole which means they only work with pedals that require a 15mm wrench for installation.

Which is the best Leg Length Shim for Time Espresso Pedals?


We recommend using the BikeFit Universal Leg Length Shim for best compatibility with Time road cleats. 







The regular 20mm extenders are solid, without a through-hole which means they only work with pedals that require a 15mm wrench for installation.


Stem sizer

How do I use the Stem Sizer with 1 1/4" steerer tubes?

The Stem Sizer comes with 2 sets of shims:

  • The steerer tube shim (1 1/4″ to 1& 1/8′)
  • Handlebar shim (31.8 to 25.4)

Removing the shim will accommodate 1&1/4″ steerer tubes.


Can the stem sizer be used outdoors on the road and off the road to get a true feel for the stem angle and length?

The Stem Sizer is not meant for road use.  It is only to be used in a fitting on sizing sessions indoors on a trainer. 


bikefit pro fitters app (Ios)

I just downloaded your app and I can't log in. How do I create one?

2019 – The App is currently being rebuilt and due to some issues, you need to use the following link to login:

Create BikeFit App Account

Make sure to take a look at our resources page for the app walk-through:

BikeFit Pro App Resources

How do I change my password?

2019 – The App is currently being rebuilt and due to some issues, you’ll need to contact us for a password reset:

[email protected]

I used to be able to login to the app and now I can't. How can I access my fits?

Currently, the app’s cloud features are only accessible with our yearly or monthly subscription.  

In the future update (2020), you will able to manage the subscription in-app.

How do I cancel my yearly or monthly subscription to the app?

Please contact us to cancel your subscription.

Can I customize the report?

We are working on some new changes to the app but we do not yet have the ability to customize the report.  Our 2020 release will allow the fitter to enter their business name and information as part of the report title.

The "Send E-mail" link is not working. How do I send a pre-fit questionnaire?

Check to make sure your e-mail is properly set up on your iDevice.  Please use this link to configure e-mail on your iPad or iPhone.

Do you have a tutorial or walkthrough for the app?

Yes!  Check out our BikeFit Pro App Resources page for more information.

Foot Fit Calculator (android)

The App told me my foot has 7 degrees of tilt but recommended a single 1-degree cleat wedge. Why is that?

Through years of testing, we’ve found that in order for the foot to sit at a neutral position, the wedging degree does not need to equate to the degree of foot tilt.  As a result, we use the following chart for equivalencies.

Bike fitting

Do you offer bike fits at BikeFit Head Quarters?

We no longer offer this service at our facility.  As a result, we send local cyclists who are interested in getting fit to our local trained bike fit professionals.

Paul Swift (master education instructor and founder of BikeFit) does offer fittings in his studio in Spokane, WA.

If I visit one of your fitters on the BikeFit Locator, what should I expect will be part of the fit?

Although each fitter BikeFit Locator,

is either a dealer of BikeFit product, uses our tools or has trained extensively with the foot/pedal interface, each bike fitter may offer different services.  This at times can be confusing so we strongly recommend reaching out to the fitter you find in your area to ask questions specifically regarding your needs and goals for a bike fitting.  

We do outline some fitting expectations and questions through our blog article but please note that contacting the fitter is the best way to assure your needs are met.

How long does it take to complete a bike fit?

This may vary from fitter to fitter but typically a full fit that incorporates the foot/pedal interface will take approximately between 1.5 – 2.5 hours.  This is highly dependent on many factors:

  • type of bike
  • type of riding
  • goals for the fit
  • previous or current injuries
  • fitter process and tools
  • type of fitter (physical therapists, coaches or certain fitters may spend more time on muscle groups, form, process…etc.)
  •  individual preferences

Contact the fitter you are interested in seeing to acquire more information before the fit.

Fitters / Dealers

How do I register for wholesale / dealer pricing?

1.) Register your account on our website.

2.) Send an e-mail to [email protected] to inform us of your request for a wholesale/dealer account.

3.) We’ll get back to you in 48 hours with questions or update your account to wholesale.  

To keep wholesale pricing current, please adhere to our dealer/wholesale requirements

How do I get listed as a BikeFit Dealer on the BikeFit Locator?

Please read through our BikeFit Dealer requirements page.

If you adhere to these requirements, please contact us with the following listing information:

  • Name/Business Name
  • E-mail
  • Phone
  • Address
  • Website

For dealers, our expectation is that you are representing BikeFit products with knowledge, passion, and enthusiasm.

Trained BikeFit Level 1 and 2 Pros are given preference when requesting a listing.


Why aren't their wholesale discounts on your tools or systems?

Wholesale accounts offer access to bulk wedges, leg length shims, and screws and discounts on resale items such as wedges, shims, spacers, screws, saddles, and insoles.

The tools are not resale items and are usually only purchased by bike fitters.  These are already discounted to the best possible price to provide you with quality bike fitting tools.


Fitter Training

How much do the courses cost?

The price varies depending on the level and location of the class.  Please fill in the contact form via our BikeFit Training page for more information.

Do I get a discount on BikeFit tools and products if I take the class?


After or before the course, we strongly recommend signing up for a wholesale account to get the best pricing on tools and products.

Each year we do provide special discounts for those who take the course in order to get them started with fitting.  These change from year to year so please feel free to reach out and ask via e-mail.

What is the difference between the Level 1 and Level 2 Course?

Level 1 – Green Course

Predominately hands-on training with actual cyclists and focuses on the contact points of the bike, specifically the foot/pedal interface (the foundation of a bike fit), pelvis/saddle, and hands/handlebars.  The class starts with our highly regarded online course and manual. No other fitting school offers this type of education prior to hands-on training. The Level 1 class is geared toward fitters working within a shop, in their own studio, as a coach, etc.

Level 2: Red Course (Advanced)

Level 2 is one of the most advanced courses in bike fitting. The side view angles for triathlon fit are introduced as the course builds on the foundation of Level 1. The focus begins shifting towards the pelvis as the crossroads for cycling movement. Leg length, saddle fit, and other advanced fitting issues are addressed. Expect to be challenged as the class builds to what is affectionately known as “Hell on Wheels” which will challenge and test your skills as an advanced fitter.

Level 2 requires the fitter to have completed level 1 and the Online Course. It is also strongly recommended to have performed at least 20 bike fits after completion of level 1.

Do you offer courses specifically designed for Physical Therapists and Athletic Trainers?

Yes.  Our BikeFit training offers both a level 1 and level 2 course specifically designed for clinicians.  Learn more on our training page.

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