The perfect gearbox for drop-in, or even putting in an engine with its full metal construction! This gearbox has super good range for some reason. And evike even recommends this gearbox for beginners to intermediate players because it comes with a MOSFET INSIDE! This came from the specna arms core series mk18 gun on evike! The gearbox has a quick change spring system aswell. Also is compatible with 7.4 and 11.1 lipos Let me know if you have any questions! Price is shipped Works perfectly as intended No offers No trades