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4x Wheels per price (20 x 9" front / 20 x 11" rear or 18 x 9" front / 18 x 10" rear)
particularly if brake ducts are being employed
Compatible with both OEM GT4 RS wing supports and SR dry carbon fiber wing risers
Competitor R low quality Phenolic spacer
This combination has proven to be extremely effective and deliver even more performance than doing either component on its own
Rear Diffuser 2020-UP Fabspeed Porsche 987 Boxster / Cayman TrackTec Conversion Kit (2005-2008) 4x Wheels per price (20Diffusers work in conjunction with other aerodynamic components of a car to help produce downforce. Because a car displaces air as it moves forward, the air molecules in the rear of the car get disrupted causing a vacuum of low pressure air. To help channel the high speed air flow coming from underneath the car, diffusers redirects the high speed air flow to transition smoothly into the low pressure vacuum in the rear. This encourages a smoother