1888a123_Beginner_Dirt_Bike___GICL_Wiki_Dirt_Bike_Parts_List_Function
[Part and Quantity] Frame Cover (1) [Part Number] DR70-100 [Materials] Mostly plastic with seat being foam padding with fake leather covering [Forces] Only forces would be the weight of the rider. This should be 165 lbs or less. [Manufacturing Process] Plastic molding, probably injection molding [Shape] Several parts were formed separately then connected together through screws. [Part Complexity] 3 [Function] 
Functional/cosmetic: Provide comfortable riding while protecting rider from engine and the engine from debris. Color is cosmetic.
Group 11 - Beginner Dirt Bike - GICL Wiki