Saito Full Throttle Needle 50-85 FA – 40S/45S/50GK/65GK/80/80GK/325R5DThe Saito Full Throttle Needle is a crucial component for 4 stroke engines, specifically designed for airplanes, helicopters, and boats & watercraft. It is compatible with Saito engines in the 50 85 FA range, including models such as 40S, 45S, 50GK, 65GK, 80, 80GK, and 325R5D. This needle is essential for controlling fuel flow and ensuring optimal performance, making it an essential part for RC enthusiasts looking to up their engine's power and