This filter is designed to be inserted into a flexible hose such as a rubber or silicone intake pipe. These filters have an aluminium ram-pipe neck and a cone shaped filter element. This integral cone channels all the incoming air, towards the inlet manifold, and in doing so, reduces unnecessary turbulence. These filters are also cone shaped because it enables easy fitting to space restricted engine compartments and with the extremely large amount of foam surface area an added boost of power to your engine too! The filter is specially strengthened using a stainless steel internal mesh, which we have developed & used in european and world touring cars! With its large size, technologically advanced filter and bell mouth alloy spun base this filter kit is capable of handling extremely large power & flow rates. Filter Outer Neck Diameter: 70mm Filter Neck Length: 50mm Filter Overall Length: 185mm Filter Base Width: 150mm Filter Top Width: 115mm Filter Material: 15mm Dual Layer Foam Filter Base Material: Filter Base Finish: Brushed Aluminium