RC enthusiasts, listen up - if you're running an Arrma 1/5 scale beast like the Kraton 8S or Outcast 8S and chewing through stock spur gears, this Hot Racing replacement is your solution. This 29-tooth spur gear is CNC machined from hardened steel and finished with black oxide coating that laughs at corrosion and wear. The 1.5 Mod pitch is seriously heavy-duty, built to handle the insane power these large-scale rigs put out. Now important note - this DOES NOT work with stock Mod 1 pinion gears, so you'll need to pair it with a hardened steel 1.5 Mod pinion to match. The tooth face width is 8mm for maximum engagement and durability when you're sending those big jumps or high-speed passes. Installation is straightforward if you're familiar with your Arrma's gearbox, and once it's in, you can pretty much forget about stripping gears under normal conditions. The black oxide finish not only looks slick but actually penetrates the metal to provide lasting protection rather than just sitting on the surface like paint. Whether you're bashing hard at the local track or just enjoying some parking lot fun, this gear upgrade gives you that peace of mind knowing your power transfer is solid. Just remember to check your gear mesh properly during installation and keep an eye on that pinion gear too - this spur is tough, but it needs a proper partner to work with!