Geometries identical to the SportPro STAGE6 version, however the R/T series is coated with a more valuable and durable material, the VITON. better fuel resistance with high percentage of alcohol and heat. Included in the package are flow guide inserts. The valve is equipped with 0.35mm carbon lamella and a 0.40mm fiberglass lamella. The kit also includes a 4mm base to be mounted under the lamellar package.