Sizing Versus Fit

Sizing Versus Fit

At Erik’s we offer both bike fitting and bike sizing services – on the surface the terms are close, however the actual processes differ significantly. Starting with the correct size bike is important and the foundation of fit, but it doesn’t guarantee a fit. Fit is optimizing the correct size bike to the individual rider.

In today’s Fit article, we’d like to discuss sizing versus fit and what each means for you and your bike.

At Erik’s we size every customer shopping for a road bike with drop-style handlebars, triathlon specific bike, or performance mountain bike. We believe sizing is an essential customer service that ensures our customers are on the correct size bike, and that bike is adjusted comfortably in their measured range.




  • To determine your bike size, we use five key physical measurements, along with a flexibility assessment.
  • Those measurements are entered in our custom sizing software which helps the us to calculate the best bike size for you.
  • We then place the chosen bike in the correct size in a trainer to make adjustments based on sizing results. The other reason we do this is so you can get a feel for the bike, and we can make sure everything looks correct.
  • With you on the bike we check: saddle height, reach and height of the handlebar, as well as comfort, then we make any necessary adjustments.
  • In total this should be a 15 to 20 minute process. Depending on the bike shop, this process can vary widely – some shops may even call their version of this a fit, but there are major and important differences that distinguish this service from a bike fit.

Bike fits at Erik’s are performed only by select expert fit staff, all of whom have undergone some of the most comprehensive fit training in the industry. We schedule appointments for all fits so we can dedicate the time necessary for each client. We start each fit with a comprehensive physical assessment, we want to understand each individual’s unique range of motion and mechanics off of the bike, so we can better support them on the bike. We use video capture and measure power output during the fit to verify changes to your position are correct no matter how minute. A bike fit will generally take between two to three hours,and we include a follow up consultation to ensure the your complete satisfaction.



  • We start every fit with an interview to better understand how the sport of cycling fits into each of our clients’ lives, we also want to learn of any concerns or possible injuries.
  • What really sets a Fit apart from Sizing is the pre-fit physical assessment. Since we all have unique physical attributes, different strengths and weaknesses, aches, and injuries.
  • We look at range of motion, flexibility and unique physical structures along the kinetic chain. We do this all off the bike so we can understand how these unique individual factors will affect you on the bike.
  • It’s only with this understanding that we can make the changes and adjustments to your equipment to support your specific physical needs.
  • The end goal is to make the bike an extension of you, whether you ride one mile or a hundred to make each pedal stroke as comfortable and efficient as possible.

Ultimately, sizing does a great job of getting the rider on the correct size bike, bike fit is taking that bike and perfecting it specifically for you. To learn more about the TruFit Services Erik’s offers and to schedule you appointment, visit our website.

A special thanks to Chris Rogers, our Advanced Services Manager and Fit Specialist, for writing this article.  Chris has been doing fits for more than 8 years.


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