1888a123_Beginner_Dirt_Bike___GICL_Wiki_Dirt_Bike_Parts_List_Function
[Part and Quantity] Front Fender (1) [Part Number] DR70-137 [Materials] Plastic is used to be light weight. [Forces] The only forces acting would be if something where to hit this part. The force would then depend on the object and the speed of the bike [Manufacturing Process] Injection Molding because of its symmetrical look and risers on underside of part [Shape] The part is formed to follow the contour of the wheel to proved extra protection for the rider [Part Complexity] 1 [Function] 
Functional: Protects rider from debris. Color of part is cosmetic to give bike an overall color scheme
Group 11 - Beginner Dirt Bike - GICL Wiki