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You may notice a slight difference in size if you have Braided Stainless Steel lines
working window for consistent bottle pressure
T25 Torx Bit
• Wire Diameter: 3
PERRIN Gurney Flap - 2015-2021 WRX/STi Mr. Gasket You may notice a slightVehicle Fitment: 2015 2021 WRX & STi INCREASE DOWNFORCE AND PERFORMANCE After sending the PERRIN Gurney Flap in for professional flow analysis, it was determined that it decreases overall lift of the car while only slightly increasing drag. This means the aerodynamic efficiency of the system is increased. Analysis has shown the PERRIN Gurney Flap increases downforce by 35 lbs. at 75 mph, 62 lbs. at 100 mph, and nearly 100 lbs. at 125 mph. AGGRESSIVE
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