This Hot Racing spur gear is an absolute beast upgrade for your Arrma 1/5 scale RC car! CNC machined from hardened steel, it's way more durable than the stock plastic gears and can handle the power of those big 8S systems without stripping. The 39-tooth count with 1.0 Mod pitch is perfect for maintaining great speed and torque balance. The black oxide coating not only looks slick but also provides excellent corrosion resistance, so it holds up well even if you're running in wet or dusty conditions. The 8mm tooth face width gives you plenty of contact surface with your pinion gear for smooth power transfer. It's specifically designed for Arrma 1/5 scale models like the Outcast 8S and Kraton 8S, so you know it's going to fit perfectly. Installation is straightforward if you're familiar with RC maintenance, and once it's on, you'll notice immediately how much smoother and more reliable your drivetrain performs. Whether you're bashing hard at the track or just want peace of mind that your gear won't fail during intense runs, this steel spur gear is totally worth the upgrade. The quality is professional-grade, and it'll save you from constantly replacing worn-out plastic gears.