Chrome rear drive pulley is 1-1/2  wide. The other diameter measures 12-1/2  edge to edge.
FITMENT
 1979 / 1984 FL 4-speed1979 / 1984 FX 4-speed1986 / 1999 FXST  1986 / 1999 FLST  1979 / 1999 FLH  1979 / 1999 FLH  1982 / 1986 FXRS  ACCESSORY ITEMS
20-045220-015616-058816-0954
          
        
      
      
        
      
      
          
        
     
   
 
  
  
 
    
    
    Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device