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the air pressure directly in front of the bumper increases with the square of speed
Operating Temperature: -20℃~+75℃
If you plan to do this yourself
the E92/E93 3 series bumpers are the same and will fit easily on either model
Precision Raceworks
F80 M3 F82 F83 M4 CARBON FIBER KHOLEN STYLE DIFFUSER WITH BRAKE LIGHT AA CO Billet caps the air pressure directly inPRODUCT DETAILS & FEATURES: Replace You Boring Stock Rear Diffuser With Our F1 Style Rear Diffuser Also Known As "K Style" Diffuser 2015+ BMW F80 M3 Sedan 2015+ BMW F82 M4 Coupe 2015+ BMW F83 M4 Convertible 2016+ BMW F82 M4 GTS + CS 3rd Brake Light Wiring Included Professional Installation Is Highly Recommended
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