89-03 Sportster, (except 98-03 XL1200S)
Much more than just jets. The kit includes a revolutionary new lightweight slide designed to deliver instantaneous throttle response, precision control and increased fuel mileage. Includes everything you need: Thunderslide assembly, main jets, diaphragm, fuel needle, Thunder Nozzle, check ball, emulsion tube, plug drill, retaining clips, hardware and instructions.