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9/16 pedals wont go in crank – they’re too big

5 min read

Asked by: Carla Baca

Do all pedals fit all cranks?

Pedals are universal as long as the thread is the right size for the crank that you have on your bike. The 9/16 20 TPI size is pretty much standardised on adult bikes in the industry now, meaning there are just the two main threads as previously mentioned.

Are 9/16 pedals standard size?

The 9/16” is the most common pedal thread size on the market today and is the size that most manufacturers use for their pedals. Almost all modern adult bikes have the 9/16” pedal with 20 threads per inch (tpi).

Are pedals too big?

Pedals can be too big, however, if the platform is larger than your shoes, or if you aren’t able to properly engage all of the pins. Many pedals come in multiple sizes, allowing you to get the right size for your foot and shoe size.

How do you screw back a bike pedal?

Quote from video: You'll need this part you also need a 5/8 tap. And and basically what you do is you'll drill this hole out. You need to make sure that you drill that hole as straight as possible.

Are my pedals 9/16 or 1 2?

If the cranks are THREE PIECES, meaning two crank arms bolted to a spindle, it will be 9/16 thread on the pedals. If the crank is ONE piece through a large bottom bracket housing, it’s 1/2 thread.

Are all pedals 9 16?

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).

What is standard pedal thread size?

9/16″ x 20 threads

Bicycle pedals are commonly a 9/16″ x 20 threads per inch. The inside diameter of the internal thread (the “nut”) must be smaller. Measured in millimeters, the OD of the pedal is typically 14.2mm.

Is 15mm the same as 9 16?

14mm = almost 9/16 inch. 15mm = almost 19/32 inch. 16mm = 5/8 inch. 17mm = almost 11/16 inch.

Why is a 3 piece crank better?

3 Piece Crank



As you might have guessed these are made of three pieces – 2 arms and spindle. The thread used to attach the arms is 9/16 inch. These are considered to be tougher and more durable than the 1 piece.

How wide should my pedals be?

Standard road pedal width is 53mm. Stance Width (or pedal stance width) is the distance between the center of one pedal to the center of the other pedal.

How do you know what size pedals to get?

The first step toward finding the right flat pedal size is to compare them to your own shoes.



What’s your foot / shoe size?

  1. Thump S: US Men’s 9 / Women’s 11 or under.
  2. Thump: US Men’s 9 / Women’s 11 and above.
  3. Stomp: US Men’s 9 / Women’s 11 or under.
  4. Stomp XL: US Men’s 9 / Women’s 11 and above.


How do I know my pedal size?

Quote from video: Since. It does not fit on a 1/2 inch wrench. That means that this pedal has a 9/16 of an inch shaft. You can take a 9/16 of an inch wrench. And slide it over the shaft of the pedal. That tells you

What is the standard bike pedal size?

In the U.S., there are two diameters (sizes) of pedal spindle (axle) threads which you are likely to encounter: 1/2″ and 9/16″. The first is generally used on bikes with a one piece crank, which will normally be an inexpensive or older bike.

What size pedal wrench do I need?

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. Don’t be tempted to use thin wheel cone bearing spanners, as they’ll distort and be ruined. 4. If there’s a hex socket it will be 6mm or 8mm.

How do you fix a loose pedal crank?

Quote from video: Really make sure that you hold the pedal. And when you're tightening you want to get. This. On there as tight as you can to keep the crank garment flush with the bike.

Are all MTB pedals the same size?

When it comes to pedal sizes, there are two sizes: ½” and 9/16”. ½” pedals are only used on very basic bikes with a one piece crank. A one piece crank is just that, it’s one piece of steel that is bent/forged to run from one pedal, through the frame, to the other pedal.

Are all pedal wrenches the same size?

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.

What is the standard thread size on a bicycle pedal?

9/16″ x 20 threads

Bicycle pedals are commonly a 9/16″ x 20 threads per inch. The inside diameter of the internal thread (the “nut”) must be smaller. Measured in millimeters, the OD of the pedal is typically 14.2mm.

How do you measure bike pedals?

Quote from video: You can take a 9/16 of an inch wrench. And slide it over the shaft of the pedal. That tells you this is a 9/16 of an inch pedal.

How do you know what size pedals to get?

The first step toward finding the right flat pedal size is to compare them to your own shoes.



What’s your foot / shoe size?

  1. Thump S: US Men’s 9 / Women’s 11 or under.
  2. Thump: US Men’s 9 / Women’s 11 and above.
  3. Stomp: US Men’s 9 / Women’s 11 or under.
  4. Stomp XL: US Men’s 9 / Women’s 11 and above.


Are bigger pedals better?

Bigger pedals make it easier to find your footing. Comfort and adjustment is the other reason, on a long ride adjusting your foot placement can reduce fatigue and a bigger pedal spreads the load. Mountain bikes tend to have larger pedals because most of them are meant for adults.