The R&D filters are manufactured with high quality materials and offer excellent flow characteristics. The wide mesh design and vulcanized rubber top offer better air speed and mixing capabilities. The quality of its non-absorbing stainless element and internal support is unsurpassed. Weighing in at just l/3 Lb (Stainless clamp included), it is the lightest filter in the industry. The superior features and benefits have made R&D flame arrestors the choice of top teams and riders around the world.