Hey RC helicopter enthusiasts! If you're looking to seriously upgrade your Align Trex 550, this H550 3538 1220KV brushless motor is exactly what you need for some insane performance. We're talking about a beast that delivers 3000W power with 60A current capacity - this thing will make your helicopter fly like a dream. The 1220KV rating is perfect for that sweet spot between power and efficiency. It's built with aluminum alloy and copper construction, weighs about 373g, and measures 60x44mm with a 5mm shaft diameter that's 25mm long. The N45SH magnetic steel can handle temperatures up to 150°C, and the Grade 6 magnetic steel creates this crazy strong magnetic field for maximum efficiency. What's really cool is the 220 high-temperature enameled wire that protects the copper wiring from damage, plus imported bearings and HRC 55 stainless steel shaft that just won't quit. Installation is pretty straightforward - connect it to your ESC (not included), hook up to power and receiver, and you're ready for some test runs. The package comes with the motor, 3 heat shrink tubes, 3 copper tubes, 5 screws, and a manual. Whether you're doing intense aerobatics or just want reliable power for your favorite flights, this motor delivers smooth, consistent performance that'll have your Trex 550 flying better than ever. Seriously, if you want to take your RC helicopter game to the next level, this brushless motor is totally worth the upgrade!