Bike Fit

Check your Gunnar Fit!

Gunnar is all about good fit, which does more to improve your performance and comfort than any other factor in frame design. Good fit means that you are comfortable, ergonomically safe and powerful and that you have the ability to adapt your fit over the years you’ll be enjoying your Gunnar. That’s why we offer such a wide range of sizes – all the way up to 68cm for road models and 23.5 inches for off-road models.

Better bike shops have experienced, professionally trained fitters who can use a number of excellent measuring systems such as Fit Kit ( ) to arrive at a basic frame size. The best systems go beyond just the numbers. Riding under the watchful eye of a trained fitter is the best way to evaluate both your fit and technique. This can be done with you on a bike mounted on a wind trainer, with you on a fitting machine (such as the Waterford Fitmaster) or even riding with you. A good fitting may take up to two hours and in some cases may involve some followup activities. Bike fitting is not a passive act. A fitter will look for signs of good form, like proper leg extension, proper ankle motion, a minimum of hip movement, good back, neck and arm position. Your feedback is just as important as the fitter’s observations. If it doesn’t feel comfortable, it probably isn’t right for you.

Fit Priorities: We design our framesets with three factors in mind, priorities as below:

  1. Safety – Riding on a bike whose fit is safe is our highest priority. We try to avoid toe overlap, which is an annoyance and could contribute to an accident. This is an issue particularly for smaller bikes but may be a factor on taller designs with shorter top tubes. Another safety issue is the standover height, which matters if you need to dismount in an emergency.
  2. Fit – how your hands and butt are positioned relative to your feet. The longer the distances you plan to cover, the more that fit should factor into your design decisions.
  3. Handling and component selection. For example you may want a particular fork or wheel size. Composite forks often come in a limited range of fork rakes, which means that your handling may need to be compromised in order to achieve a good, safe fit.

Fit and Fitness: Fit does not get rid of all riding-related pain. If you normally ride 10 miles at a time, you will almost certainly hurt at the end of a 100 mile ride. You may also find that investment in strengthening back, neck, shoulder and arm muscles can significantly improve your performance and enjoyment. Be sure to let your fitter know of any medical conditions you have that might affect your riding or be affected by your riding, such as spinal injuries, ligament problems, bone breaks and so on. If you have a lot of physical complications, you may want to involve your doctor and/or physical therapist. We want riding to solve to your health problems, not cause them.

In some cases, it may take a change of both fit and technique to achieve the best result. For example, holding your arms straight for long periods of time stresses the wrists, elbows, shoulders, neck and back Shortening your reach will relieve the need to hold your arms straight, but benefit only when you actually start bending your arms.

Not every rider needs to change his or her fit. If you suffer no pain and you feel like you’re getting the most for your efforts, what you may just want on your new bike is what you already have on your existing bike. Try out our Size Selector page to see how you’ll fit on the stock Gunnar of your dreams. You’ll also be able to see detailed specs for the selected size and model.