Bike Forums - View Single Post - Is there an easy way to tell what size pedal threads you have?

08-01-10 | 10:24 AM

#6

Retro Grouch

Senior Member

Joined: Feb 2004

Posts: 30,225

Likes: 649

From: St Peters, Missouri

Bikes: Catrike 559 I own some others but they don't get ridden very much.

The common sizes in the US are 1/2" and 9/16". One piece cranks take 1/2" and virtually everything else is 9/16".

So why have bicycle pedals (and headsets) escaped the conversion to metric?

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