The FLOWMAX carburetor restrictor from Ultimate Racing features an innovative design, larger than standard O.S. venturis and wider at the base. This new geometry improves fluid flow, providing additional power that allows the use of smaller venturis without reducing power, thus improving fuel economy.
It is made from aluminum, with laser markings for easy size identification, and has a red anodized finish. The top is engraved for easy removal. It is available in 6 and 6.5mm.