For BMW Z4 G29 2 Door Coupe TRD Style Rear Trunk Boot Spoiler 2020 2022 Real Carbon Fiber Rear Trunk Spoiler Car Wing

About the hole punched on the back of the: spoilerSince the spoiler is a hollow design, holes need to be drilled to increase air circulation, prevent damage at high temperatures, and increase the service life of the spoiler.（Usually there will be 1-2 holes on the back of the spoiler）