Intended for closed-course racing only. Components included in the kit are based off of US models and discretion must be used when attempting to install the kit on a non-US model. NBR rubber material is used on all O-rings and rubber gaskets; NBR has excellent resistance to the ethanol used in today’s fuels. Includes all gaskets, O-rings, float bowl, carburetor cap, accelerator pump screws, extended fuel mixture screw (with spring, washer, and O-ring), accelerator pump diaphragm (spring and boot), float needle valve (FMK tip), emulsion tube, slide needle and main/pilot jets. Three main jets and three pilot jets that can be used to tune a stock machine or a modified one.