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The stock DME calibration is suited to the high back pressure smaller diamater stock header system
Evolution Line (Titanium)
and Evolution Race Line (Titanium)
High-density multi-louvered fin design with 20% more surface area contact compared to OEM unit
As you can see from the dyno test
RKP Carbon Fibre Side Skirts - BMW 3 Series F80 M3 M4 (F82 / F83) The stock DME calibration isRKP Composites has emerged as an industry leader of top quality US and German made carbon fiber products, starting with an excellent development history in the E92 M3 market. RKP was responsible for bringing M3 GTS and M3 GT4 racing parts to US M3 owners, and made the transition to developing body and aerodynamic components for modern generation BMW vehicles. With each component, RKP seeks to develop a purposeful design that accentuates and