Made from carbon very strong and sharp made in cacuum mold. Shape of funnels working extremly well with shape of airbox and give reall effect to power and torque. Difference between tests is only serial air funnels vs motomaxx carbon funnels. Tested bike Kawasaki ZX10R 2016 had 800km and MIVVArrow exhaust mufler. This graph is true , no bullshit I can guarantee performance.Funnels has no weight and they very easy to install. Gassoline does not destroy this material. This is not 3D printer cheap product. This product is already tested by BSB team. If you have any question, ask. The item "KAWASAKI ZX 10R 2016 Racing air funnels, bell mouth set" is in sale since Monday, June 22, 2020. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Air Filters". The seller is "boris996sp" and is located in Slovakia. This item can be shipped worldwide.