taco eater :
Frank Sapone from Marietta, PA United States
Like most aftermarket, it's close but no cigar. Too tight to fit on the pedal shaft. You will need to file/bore to make it fit.
Check your pedal shaft play by pushing one side or the other. If there's any significant play you're likely popping the pedal chain off sometimes. You're probably missing this washer and the other ones. If it still pops off after you've fixed the play, clean your chain and the tensioner. You might need to bend the tensioner a bit.
Needs filing 
