Preheat the oven to 350 F. Line two (12-cavity) muffin tins with 18 paper liners.
Add sifted all-purpose flour, baking powder, baking soda, fine sea salt, ground cinnamon, and ground nutmeg to mixing bowl. Whisk to combine. Set aside.
Add grated pear, sugar, and light brown sugar to stand mixer. Beat on medium until well combined, about 30 seconds.
Gradually add the vegetable oil. Beat on medium speed until all the oil is incorporated.
Add eggs, one at a time and beat well after each addition. Remove bowl from stand mixer.
Add reserved flour mixture to stand mixer bowl about 1/2 cup at a time. Fold in with large spatula. Do not over mix.
Divide the batter evenly between the prepared muffin tins. Paper liners should be about 3/4 full.
Bake the cupcakes in preheated oven for 22 minutes or until top of cakes are firm to the touch, and toothpick inserted in the center of each cake comes out clean.
Place muffin tins on wire rack. Cool for 10 to 15 minutes before removing cupcakes from tin to cool completely.