The same high flow design as our Boport Stainless valves but in light weight Titanium. These valves weigh half the weight of stainless. Hardened tips come standard. These come standard in 4.850" length and 1.89 1.60" diameters however can be custom ordered for your application. .450" Tip length for most applications. These are available as a light weight spring and retainer package as well for solid roller cams.