Often asked: How To Measure Bike Pedal Size?

How do I know my bike pedal size?

Check the Cranks on the Bike If your cranks are made up of three separate sections, two separate crank arms and the spindle that goes through the frame then your pedals will be size 9/16” x 20 tpi.

How are pedals measured?

The overall size of each of our pedal designs slightly changes where your feet should rest on them. The way it’s measured is from the middle of the pedal to the crank arm. Once you’ve found the right-sized flat pedal for you, you might be interested in exploring your different pin options.

How do you measure pedal width?

Stance Width Origins

  1. Stance Width – The distance between the center of one pedal to the center of the other pedal.
  2. Q Factor / Crank Width – The distance between the outside portion of each crank arm where the pedal attaches.
  3. Pedal Spindle Width – The distance from the outside of the crank arm to the center of the pedal.

Are all pedals 15mm?

The flats on almost all modern pedals take a 15mm spanner, though many pedal spanners also have a 9/16-inch jaw for older pedals.

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Why are flat pedals better?

Flat pedals provide several benefits when descending; better power transfer through your cranks, greater range of foot position and rotation, ease of adjusting heels down, quick and easy removal of your feet from the pedals. Good body position, range of motion and angulation are maximized with flat pedals.

Do all pedals fit all cranks?

Most pedals have 9/16″ x 20 tpi threads. Pedals for one-piece cranks are 1/2″ x 20 tpi. Older French bicycles used a 14 mm x 1.25 mm thread, but these are quite rare. French-threaded pedals are commonly labeled “D” and G” (French for “droite” and”gauche” (right and left).

Can MTB pedals be too big?

A bigger pedal gives a mountain biker added confidence when jumping and also provides more foot placement adjustment as compared to clipless pedals. A small MTB pedal for a bigger shoe size guy or gal can be uncomfortable.

Do I need longer pedal axle?

Longer pedal spindles might be recommended. This rider’s stance width is too wide; the knees are tracking to the inside of the pedals. Shorter pedal spindles might be recommended. Proper stance width keeps knees happy and power transfer efficient, no matter the clipless or platform pedal you’re spinning.

Do I need pedal spacers?

If physiological issues are causing pedaling discomfort, a pair of bike pedal extenders is probably the solution you need. But, they’re cheap and just the ticket for cyclists looking for flexibility in foot placement on the pedals.

How do you measure pedal spindles?

Speedplay’s spindle lengths are measured from the pedal shoulder—where q factor leaves off—to the center of the pedal platform. This is handy, if you want to measure the absolute width from one pedal platform to the other.

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Is 9/16 The same as 15mm?

14mm = almost 9/16 inch. 15mm = almost 19/32 inch. 16mm = 5/8 inch. 19mm = 3/4 inch.

Can you change pedals without pedal wrench?

Since you don’t have a pedal wrench, typically, your standard 15 mm open-end wrench will do the trick just as easily. From there, take a look at the pedal and ensure that it has a wrench flat on the spindle for your wrench to attach to. If the pedal doesn’t have this, this method, unfortunately, will not work.

What size wrench is needed for bike pedals?

Pedal wrench flats are typically 15mm in size. 9/16″ (~14.3mm) is somewhat common on older pedals. 17mm and other sizes have been used, but you aren’t very likely to encounter them.

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